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Babblers make the cover again!
Our paper on the impact of high temperatures on offspring survival to fledging and adult adjustment in provisioning behaviour, led by former PhD student (and now a graduated Doctor!) Amanda Bourne, has made the front cover of the November/December issue of Behavioural Ecology! This paper is part of a series of papers from Amanda Bourne's PhD on the pied babblers, regarding the potential impact of climate change on cooperative breeding animals. You can find references to all papers in the series in the publication list below. Follow this link to read the issue of Behavioural Ecology: academic.oup.com/beheco/issue/32/6 |
Magpies make the cover!
Our paper on the ability of magpies to decode urgency information in conspecific calls has made the cover of Behaviour Vol 160(5) 2023.
Our paper on the ability of magpies to decode urgency information in conspecific calls has made the cover of Behaviour Vol 160(5) 2023.
(a) Publications
Humphries, D.J., Nelson-Flower, M.J., Bell, M.B.V., Finch, F.M. & Ridley, A.R. (in press). Vocal kin recognition in the cooperatively breeding southern pied babbler. Animal Behaviour.
Gibson Vega, A., Hall, M.L., Ridley, A.R., Cowen, S.J., Slender, A.L., Burbidge, A.H., Louter, M. & Kennington, W.J. (prov accept). Population genetic structure associated with a landscape barrier in the Western Grasswren (Amytornis textilis textilis). Ibis.
Hunt, K., Marais, L., Cunningham, S.J., Ridley, A.R., Moagi, L., Rose, S., McKechnie, A., Bourne, A.R. (in press). Camelthorn and blackthorn trees provide important resources for Southern Pied Babblers Turdoides bicolor in the Kalahari. Ibis.
Bourne, A.R., Ridley, A.R. & Cunningham, S.J. (in press). Helpers don't help when it's hot in a cooperatively breeding bird, the Southern pied babbler. Behavioural Ecology (Open Access link: academic.oup.com/beheco/advance-article/doi/10.1093/beheco/arad023/7123830?searchresult=1)
Walsh, S.L., Townsend, S.W., Engesser, S. & Ridley, A.R. 2023. Multi-level combinatoriality in magpie non-song vocalizations. Journal of the Royal Society Interface 20: 20220679. (Open access: royalsocietypublishing.org/doi/full/10.1098/rsif.2022.0679).
Dutour, M., Walsh, S., Blackburn, G. & Ridley, A.R. (in press). Western Australian magpies decode urgency in conspecific alarm calls. Behaviour 160(5), 393-408.
Soravia, C. Ashton, B.J., Thornton, A. & Ridley, A.R. 2022. General cognitive performance declines with age and is negatively related to fledging success in a wild bird. Proceedings of the Royal Society B: Biological Sciences 289(1989) 20221748 (Open Access: royalsocietypublishing.org/doi/full/10.1098/rspb.2022.1748)
Blackburn, G, Ridley, A.R., Dutour, M. (in press). Australian magpies discriminate between the territorial calls of intra and extra-group conspecifics. Ibis https://doi.org/10.1111/ibi.13151
Grueter, C.C., Ridley, A.R., Kaplin, B.A. & Matthews, J.A. (in press). Association patterns in a high-elevation chimpanzee community in Rwanda. Ethology, Ecology & Evolution.
Sollis, J.G., Ashton, B.J., Speechley, E.M. & Ridley, A.R. 2023. Repeated testing does not confound cognitive performance in the Western Australian magpie (Cracticus tibicen dorsalis). Animal Cognition 26(2), 579-588. doi.org/10.1007/s10071-022-01699-1
Soravia, C., Ashton, B.J. & Ridley, A.R. 2022. Periorbital temperature responses to natural air temperature variation in wild birds. Journal of Thermal Biology 109, 103323
Ashton, B.J., Thornton, A., Speechley, E.M. & Ridley, A.R. 2022. Does trappability and self-selection influence cognitive performance? Royal Society Open Science 9(9) 220473 (Open Access) royalsocietypublishing.org/doi/abs/10.1098/rsos.220473
Freeberg, T.M., Ridley, A.R., & d’Ettorre, P. (Editors). 2022. The Routledge International Handbook of Comparative Psychology (1st ed.). Routledge. https://doi.org/10.4324/9781003091868
Dutour, M., Ridley, A.R. & Randler, C. 2022. Is the urgency encoded in heterospecific alarm calls perceived by domestic chickens? Journal of Zoology 318(2) 84-90. (Open Access) https://doi.org/10.1111/jzo.13008
Ashton, B.J., Thornton, A., Cauchoix, M. & Ridley, A.R. 2022. Long term repeatability of cognitive performance. Royal Society Open Science 9(5) 220069. (Open Access: royalsocietypublishing.org/doi/full/10.1098/rsos.220069)
Ridley, A.R., Nelson-Flower, M.J., Humphries, D,J,. Wiley, E.M. & Kokko, H. 2022. Kidnapping intergroup young: an alternative strategy to maintain group size in the group-living pied babbler (Turdoides bicolor). Philosophical Transactions of the Royal Society Series B: Biological Sciences 377, 20210153. (Open Access: royalsocietypublishing.org/doi/full/10.1098/rstb.2021.0153)
Blackburn, G., Broom, E., Ashton, B.J., Thornton, A. & Ridley, A.R. 2022. Heat stress inhibits cognitive performance in wild Western Australian magpies (Cracticus tibicen dorsalis). Animal Behaviour 188, 1-11.
Cannell, B., Allen, P.J.D., Wiley, E.M., Radford, B., Surman, C.A., Ridley, A.R. 2022. The diet of brown boobies at a globally significant breeding ground is influenced by sex, breeding, sub-colony and year. Marine Ecology Progress Series 681, 227-245.
Bourne, A.R., Cunningham, S.J., Nupen, L.J., McKechnie, A.E. & Ridley, A.R. 2022. No sex-specific differences in the influence of high temperatures during early development on nestling mass and fledgling survival in the southern pied babbler Turdoides bicolor. Ibis 164, 304-312.
Humphries, D.J., Nelson-Flower, M.J., Bell, M.B.V., Finch, F. & Ridley, A.R. 2021. Kinship, dear enemies and costly combat: the effects of relatedness on territorial overlap and aggression in a cooperative breeder. Ecology & Evolution 11, 17031-17042.
Dutour, M., Kasper, J. & Ridley, A.R. 2021. Transfer of information between a highly social species and heterospecific community members. Behavioral Ecology & Sociobiology 75, 1-11.
Dutour, M., Walsh, S.L., Speechley, E.M. & Ridley, A.R. 2021. Female Western Australian magpies discriminate between familiar and unfamiliar human voices. Ethology 127, 979-985.
Bourne, A.R., Ridley, A.R., Spottiswoode, C.N. & Cunningham, S.J. 2021. Direct and indirect effects of high temperatures on fledging in a cooperatively breeding bird. Behavioural Ecology 32, 1212-1223.
Bourne, A.R., Ridley, A.R., McKechnie, A.E., Spottiswoode, C.N. & Cunningham, S.J. 2021. Dehydration risk is associated with reduced nest attendance and hatching success in a cooperatively breeding bird, the southern pied babbler Turdoides bicolor. Conservation Physiology 9, coab43 (Open Access)
Moagi, L.L., Bourne, A.R., Cunningham, S.J., Jansen, R., Ngcamphala, C.A., Ganswindt, A., Ridley, A.R. & McKechnie, A.E. 2021. Hot days are associated with short-term adrenocortical responses in a southern African arid-zone passerine bird. Journal of Experimental Biology 224(10): jeb242535. *Article chosen as Editor's Choice for issue, and 'Inside JEB' popular article for the paper can be found here: journals.biologists.com/jeb/article/224/10/jeb242790/268361/Extreme-heat-is-genuinely-stressful-for-southern
Ridley, A.R., Wiley, E.M., Bourne, A.R., Cunningham, S.J. & Nelson-Flower, M.J. 2021. Understanding the potential impact of climate change on the behaviour and demography of a social species: the pied babbler (Turdoides bicolor) as a case study. Advances in the Study of Behaviour 53, 225-266. Share link: https://www.sciencedirect.com/science/article/pii/S006534542100005X?dgcid=author
Soravia, C., Ashton, B.J., Thornton, A. & Ridley, A.R. 2021. The impacts of heat stress on animal cognition: implications for adaptation to a changing climate. WIRES Climate Change 12(4)e713. Share link: https://onlinelibrary.wiley.com/share/author/MA34MVKMW97VXDYXYIWP?target=10.1002/wcc.713
Matthews, J.K., Ridley, A.R., Kaplin, B. & Grueter, C.C. 2021. Ecological and social influences on party size, composition and gregariousness of chimpanzees (Pan troglodytes schweinfurthii) inhabiting a montane forest. Behavioural Ecology & Sociobiology 75, 1-9.
Ridley, A.R. & Nelson-Flower, M.J. 2021. Understanding the trade-off between cooperation and conflict in avian societies. In: Cooperation and conflict: biological mechanisms at the interface. Edited by Walter Wilcyzinski and Sarah F. Brosnan. Cambridge University Press, Cambridge, UK.
Dutour, M., Walsh, S.L. & Ridley, A.R. 2021. Australian magpies adjust their alarm calls according to predator distance. Bioacoustics 30(4), 458-468.
Bourne, A.R., Cunningham, S.J., Spottiswoode, C.N. & Ridley, A.R. 2020. Hot droughts compromise interannual survival across all group sizes in a cooperatively breeding bird. Ecology Letters 23,1776-1788.
Bourne, A.R., Cunningham, S.J., Spottiswoode, C.N. & Ridley, A.R. 2020. High temperatures drive offspring mortality in a cooperatively breeding bird. Proceedings of the Royal Society Series B - Biological Sciences 287: 20201140.
Bourne, A.R., Cunningham, S.J., Spottiswoode, C.N. & Ridley, A.R. 2020. Compensatory breeding in years following drought in a desert-dwelling cooperative breeder. Frontiers in Ecology and Evolution 8:190. www.frontiersin.org/articles/10.3389/fevo.2020.00190/abstract
Dutour, M & Ridley, A.R. 2020. Females sing more often and at higher frequencies than males in Australian magpies. Behavioural Processes 172, 104045.
Mirville, M.O., Ridley, A.R., Samedi, J.P.M., Vecellio, V., Ndagijimana, F., Stoinski. T. & Grueter, C.C. 2020. Intragroup behavioural changes following intergroup conflict in mountain gorillas (Gorilla beringei beringei). International Journal of Primatology 41, 382-400.
Matthews, J.K., Ridley, A.R., Kaplin, B. & Grueter, C.C 2020. A comparison of the efficacy of fecal sampling and direct feeding observations for quantifying the diet of a frugivorous primate. Current Zoology 66, 333-343.
Soh, M.C.K., Peh, K.S-H., Mitchell, N.J., Ridley, A.R., Butler, C.W. & Puan, C.L. 2019. Impacts of habitat degradation on tropical montane biodiversity and ecosystem services: a systematic map for identifying future research priorities. Frontiers in Forestry and Global Change 2:83 www.frontiersin.org/articles/10.3389/ffgc.2019.00083/full
(Open Access)
Ashton, B.J., Thornton, A. & Ridley, A.R. 2019. Larger group sizes facilitate the emergence and spread of innovations in a group-living bird. Animal Behaviour 158, 1-7.
Silvestri, A.J., Morgan, K. & Ridley, A.R. 2019. The association between evidence of a predator threat and responsiveness to alarm calls in Western Australian magpies (Cracticus tibicen dorsalis). PeerJ 7 e7572 (Open Access)
Matthews, J.K., Ridley, A.R., Niyigaba, P., Kaplin, B. & Grueter, C.C. 2019. Chimpanzee feeding ecology and fallback food use in the montane forest of Nyungwe National Park, Rwanda. American Journal of Primatology 82, e22971.
Pike, K.N., Ashton, B.J., Morgan, K. & Ridley, A.R. 2019. Social and morphological factors influence variation in offspring care in the cooperatively breeding Western Australian magpie. Frontiers in Ecology & Evolution. www.frontiersin.org/articles/10.3389/fevo.2019.00092/full (Open Access)
Ridley, A.R & Mirville, M.O. 2019. Utilising the research on intergroup conflict in non-human animals can help inform patterns of human intergroup conflict. Behavioral & Brain Sciences 42.
Walsh, S.L., Townsend, S.W. & Ridley, A.R. 2019. Investigating the potential for call combinations in a life-long vocal learner. Ethology 125, 362-368.
Jepsen, E.M., Ganswindt, A., Ngcamphalala, C.A., Bourne, A.R., Ridley, A.R. & McKechnie, A.E. 2019. Non-invasive monitoring of physiological stress in an Afrotropical arid-zone passerine bird, the southern pied babbler. General & Comparative Endocrinology 276, 60-68.
Bourne, A.R., McKechnie, A.E., Cunningham, S.J., Ridley, A.R., Woodborne, S.P. & Karasov, W. 2019. Non‐invasive measurement of metabolic rates in wild, free‐living birds using doubly labelled water. Functional Ecology 33, 162-174.
Ashton, B.J., Ridley, A.R. & Thornton, A. 2019. Smarter through group living: A response to Smulders. Learning & Behaviour, 47(4), 277-279.
Mirville, M.O., Ridley, A.R., Samedi, J.P.M., Vecellio, V., Ndagijimana, F., Stoinski, T.S. & Grueter, C.C. 2018. Factors influencing individual participation during intergroup interactions in mountain gorillas. Animal Behaviour 144, 75–86.
Mirville, M.O., Ridley, A.R., Samedi, J.P.M., Vecellio, V., Ndagijimana, F., Stoinski, T.S. & Grueter, C.C. 2018. Low familiarity and similar‘group strength’ between opponents increase the intensity of intergroup interactions in mountain gorillas (Gorilla beringei beringei)’, Behavioural Ecology and Sociobiology 72 11, doi:10.1007/s00265-018-2592-5
Ashton, B.J., Thornton, A. & Ridley, A.R. 2018. An intraspecific appraisal of the social intelligence hypothesis. Philosophical Transactions of the Royal Society of London Series B 317, 20170288.
Engesser, S., Ridley, A.R., Manser, M.B., Manser, A. & Townsend, S.W. 2018. Internal acoustic structuring of pied babbler recruitment cries specifies the form of recruitment. Behavioral Ecology 29, 1021-1030.
Wiley, E.M. & Ridley, A.R. 2018. The benefits of pair bond tenure in the cooperatively breeding pied babbler (Turdoides bicolor). Ecology and Evolution 8, 7178-7185
Ridley, A.R. & Mirville, M.O. 2018. The importance of understanding costs and benefits: a commentary on Christensen & Radford. Behavioral Ecology
Nelson-Flower, M.J., Flower, T.P. & Ridley, A.R. 2018. Sex differences in the drivers of reproductive skew in a cooperative breeder. Molecular Ecology 27, 2435-2446.
Nelson-Flower, M.J., Wiley, E., Flower, T.P. & Ridley, A.R. 2018. Individual dispersal decisions in a cooperative breeder: ecological constraints, the benefits of philopatry, and the social queue for dominance. Journal of Animal Ecology 87, 1227-1238
Ashton, B.J., Ridley, A.R., Edwards, E. & Thornton, A.N. 2018. Cognitive performance is linked to group size and affects fitness in Australian magpies. Nature 25503/doi:10.1038.
Engesser, S., Ridley, A.R. & Townsend, S.W. 2017. Element repetition rates encode functionally distinct information in pied babbler ‘clucks’ and ‘purrs’. Animal Cognition 20, 953-960.
Nelson-Flower, M.J. & Ridley, A.R. 2016. Nepotism and subordinate tenure in a cooperative breeder. Biology Letters 12(8) 20160365
Humphries, D.J. Finch, F.M., Bell, M.B.V. & Ridley, A.R. 2016. Vocal cues to identity: pied babblers produce individually distinct but not stable loud calls. Ethology 122, 609-619. onlinelibrary.wiley.com/doi/10.1111/eth.12508/full
Engesser, S., Ridley, A.R. & Townsend, S.W. 2016. Meaningful call combinations and compositional processing in the southern pied babbler. Proceedings of the National Academy of Sciences 113, 5976-5981 www.pnas.org/content/113/21/5976.abstract
Wiley, E.M. & Ridley, A.R. 2016. The effects of temperature on offspring provisioning in a cooperative breeder. Animal Behaviour 117, 187-195 www.sciencedirect.com/science/article/pii/S0003347216300653
Keynan, O & Ridley, A.R. 2016. Component, group and demographic Allee effects in a cooperatively breeding bird species, the Arabian babbler (Turdoides squamiceps). Oecologia 182, 153-161 link.springer.com/article/10.1007/s00442-016-3656-8
Keynan, O, Ridley, A.R. & Lotem, A. 2016. Task-dependent differences in learning by subordinate and dominant wild Arabian babblers. Ethology 122, 399-410.
Ridley, A.R. 2016. Southern pied babblers: the dynamics of conflict and cooperation in a group living society. in Cooperative breeding: studies of ecology, evolution and behaviour (Koenig, W.D. & Dickinson, J.S. eds). Cambridge University Press. Pp 115-132.
Mirville, M.O., Kelley, J.L., Ridley, A.R. 2016. Group size and associative learning in the Australian magpie (Cracticus tibicen dorsalis). Behavioral Ecology & Sociobiology 70, 417-427. Link
Ridley, A.R., Humphries, D.J. & Wiley, E.M. 2015. Is information from both quality signalling and social recognition really redundant? A commentary on Sheehan & Bergman. (Invited Commentary). Behavioral Ecology. Link
Nelson-Flower, M.J. & Ridley, A.R. 2015. Male-male competition is not costly to dominant males in a cooperatively breeding bird. Behavioral Ecology & Sociobiology 69, 1997-2004 .Link
Humphries, D.J., Finch, F.M., Bell, M.B.V. & Ridley, A.R. 2015. Calling where it counts: subordinate pied babblers target the audience of their vocal advertisements. PLoS One 10(7) e0130795. Link
Edwards, E. K., Mitchell, N.J. & Ridley, A.R. 2015. The impact of high temperatures on foraging behaviour and body condition in the Western Australian Magpie Cracticus tibicen dorsalis. Ostrich - Journal of African Ornithology (Special Edition in memory of Prof Phil Hockey) 86, 137-144. Link
Ridley, A.R. & Ashton, B.J. 2015. The benefits of an evolutionary framework for the investigation of teaching behaviour, and why the emphasis should be taken off humans as a benchmark. (Invited commentary). Behavioral and Brain Sciences.
Keynan, O., Ridley, A.R. & Lotem, A. 2015. Social foraging strategies and acquisition of a novel foraging skill in a cooperative breeder. Behavioral Ecology 26, 207-214. Link
Flower, T.P., Gribble, M. & Ridley, A.R. 2014. Deception by flexible alarm mimicry in an African bird. Science 344, 513-516. Link
Ridley, A.R., Wiley, E.M. & Thompson, A.M. 2014. The ecological benefits of interceptive eavesdropping. Functional Ecology 28, 197-205. Link Lay summary
Thompson, A.M. Ridley, A.R., Hockey, P.A.R., Finch, F.M., Britton, A. & Raihani, N.J. 2013. The influence of siblings on begging behaviour. Animal Behaviour 86: 811-819. Link
Nelson-Flower, M.J., Hockey, P.A.R., O’Ryan, C., English, S., Thompson, A.M., Bradley, K., Rose, R. & Ridley, A.R. 2013. Costly reproductive competition between females in a monogamous cooperatively breeding bird. Proceedings of the Royal Society of London Series B – Biological Sciences 280, 20130728. Link.
Thompson, A.M., Raihani, N.J., Hockey, P.A.R., Britton, A., Finch F. & Ridley, A.R. 2013. The influence of fledgling location on adult provisioning: a test of the blackmail hypothesis. Proceedings of the Royal Society of London Series B - Biological Sciences 280, 20130558. Link
Ridley, A.R., Nelson-Flower, M.J. & Thompson, A.M. 2013. Is sentinel behaviour safe? An experimental investigation. Animal Behaviour 85, 137-142. Link
Thompson, A.M. & Ridley, A.R. 2013. Do fledglings choose wisely? An experimental investigation into social foraging behaviour. Behavioral Ecology & Sociobiology 67, 69-78. Link
Ridley, A.R. & van den Heuvel, I.M. 2012. Is there a difference in reproductive performance between cooperative and non-cooperative species? A southern African comparison. Behaviour 149, 821-848. Link
Child, M.F., Flower, T.P. & Ridley, A.R. 2012. Investigating a link between bill morphology, foraging ecology and kleptoparasitic behaviour in the fork-tailed drongo Dicrurus adsimilis. Animal Behaviour 84, 1013-1022. Link
Flower, T.P., Child, M.F. & Ridley, A.R. 2013. The ecological economics of kleptoparasitism: payoffs from self-foraging versus kleptoparasitism. Journal of Animal Ecology 82, 245-255. Link
du Plessis, K.L., Martin, R.O., Hockey, P.A.R., Cunningham, S.J.C. & Ridley, A.R. 2012. The costs of keeping cool in a warming world: implications of high temperatures for foraging, thermoregulation and body condition of an arid-zone bird. Global Change Biology 18, 3063-3070. Link
Nelson-Flower, M.J., Hockey, P.A.R., O’Ryan, C. & Ridley, A.R. 2012. Inbreeding avoidance mechanisms: dispersal dynamics in cooperatively breeding pied babblers. Journal of Animal Ecology 81, 875-882. Link
Mzumara, T.I., Hockey, P.A.R. & Ridley, A.R. 2012. Re-assessment of the conservation status of the endangered yellow-throated apalis, Apalis flavigularis, of Malawi. Bird Conservation International 22, 184-192. Link
Golabek, K.A., Ridley, A.R. & Radford, A.N. 2012. Food availability affects strength of seasonal territorial behaviour in a cooperatively breeding bird. Animal Behaviour 83, 613-619. Link
Ridley, A.R. & Thompson, A.M. 2012. The effect of Jacobin cuckoo parasitism on the body mass and survival of young in a new host species. Ibis 154, 195-199. Link
Ridley, A.R. 2012. Invading together: the benefits of coalition dispersal in a cooperative bird. Behavioral Ecology & Sociobiology 66, 77-83. Link
Hollén, L.I., Bell, M.B.V., Wade, H.M., Rose, R., Russell, A., Niven, F., Ridley, A.R. & Radford, A.N. 2011. Ecological conditions influence sentinel decisions. Animal Behaviour 82, 1435-1441. Link
Hollén, L.I., Bell, M.B.V., Russell, A., Niven, F., Ridley, A.R., Radford, A.N. 2011 Calling by concluding sentinels: coordinating cooperation or revealing risk? PLoS One 6(10):e25010 (doi:10.1371/journal.pone.0025010). Link
Nelson-Flower, M.J., Hockey, P., O’Ryan, C. Raihani, N., du Plessis, M. & Ridley,A.R. 2011. Monogamous dominant pairs monopolize reproduction in the cooperatively breeding pied babbler. Behavioral Ecology 22, 559-565. Link
Ridley, A.R. & Thompson, A.M. 2011. Heterospecific egg destruction by wattled starlings and the impact on pied babbler reproductive success. Ostrich 82, 201-205. Link
Hockey, P.A.R., Sirami, C., Ridley, A.R., Midgley, G.F. & Babiker, H.A. 2011. Interrogating recent range changes in South African birds: confounding signals from land-use and climate change represent a challenge for attribution. Diversity & Distributions 17, 254-261. Link
Radford, A.N., Hollén, L.I., Bell, M.B.V. & Ridley, A.R. 2011 . Singing for your supper: sentinel calling by kleptoparasites can mitigate the costs to victims. Evolution 65, 900-906. Link
Ridley, A.R., Raihani, N.J. & Bell, M. B.V. 2010. Experimental evidence that sentinel behaviour is affected by risk. Biology Letters 6, 445-448. Link
Raihani, N.J., Nelson-Flower, M.J., Browning, L.E. & Ridley, A.R. 2010. Routes to breeding in cooperatively breeding pied babblers. Journal of Avian Biology 41, 681-686. Link
Bell, M.B.V., Radford, A.N., Smith, R.A., Thompson, A.M. & Ridley, A.R. 2010. Bargaining babblers: vocal negotiation of cooperative behaviour in a social bird. Proceedings of the Royal Society of London Series B – Biological Sciences 277, 3223-3228. Link
Raihani, N.J., Nelson-Flower, M.J., Browning, L.E., Moyes, K. & Ridley, A.R. 2010. Synchronous provisioning increases brood survival in cooperatively breeding pied babblers. Journal of Animal Ecology 79, 44-52. Link
Ridley, A.R. & Child, M.F. 2009. Specific targeting of host individuals by a kleptoparasitic bird. Behavioral Ecology & Sociobiology 63, 1119-1126. Link
Bell, M.B.V., Radford, A.N., Rose, R., Wade, H., & Ridley, A.R. 2009. The value of constant surveillance in a risky environment. Proceedings of the Royal Society of London Series B – Biological Sciences 276, 2997-3005. Link
Ridley, A.R. & Raihani, N.J. 2008. Task partitioning increases reproductive output in a cooperative bird. Behavioral Ecology 19, 1136-1142. Link
Raihani, N.J., Ridley, A.R., Browning, L.E. & Nelson-Flower, M.J. 2008. Juvenile female aggression in cooperatively breeding pied babblers: causes and contexts. Ethology 114, 452-458. Link
Radford, A.N. & Ridley, A.R. 2008. Close-calling regulates spacing between foraging competitors in the group-living pied babbler. Animal Behaviour 75, 519-527. Link
Ridley, A.R., Raihani, N.J & Nelson-Flower, M.J. 2008. The cost of being alone: the fate of floaters in a population of cooperatively breeding pied babblers. Journal of Avian Biology 39, 389-392. Link
Raihani, N.J. & Ridley, A.R. 2008. Experimental evidence for teaching in wild pied babblers. Animal Behaviour 75, 3-11. Link
Raihani, N.J & Ridley, A.R. 2008 . Parental aggression against dependent young results in task partitioning in a cooperative bird. Biology Letters 4, 24-26. Link
Ridley, A.R. 2007. Factors affecting offspring survival and development in a cooperative bird: social, maternal and environmental effects. Journal of Animal Ecology 76, 750-760. Link
Radford, A.N. & Ridley, A.R. 2007. Individuals in foraging groups may use vocal cues when assessing their need for anti-predator vigilance. Biology Letters 3, 249-252. Link
Ridley, A.R. & Huyvaert, K.P. 2007. Sex-biased preferential care in the cooperatively breeding Arabian babbler. Journal of Evolutionary Biology 20, 1271-1276. Link
Ridley, A.R., Child, M.F & Bell, M.B.V. 2007. Interspecific audience effects on the alarm-calling behaviour of a kleptoparasitic bird. Biology Letters 3, 589-591. Link
Raihani, N.J. & Ridley, A.R. 2007. Variable fledging age according to group size: tradeoffs in a cooperative bird. Biology Letters 3, 624-627. Link
Ridley, A.R & Raihani, N.J. 2007. Variable post-fledging care in a cooperative bird: causes and consequences. Behavioral Ecology 18, 994-1000. Link
Raihani, N.J. & Ridley, A.R. 2007. Adult vocalisations during provisioning: offspring responses and post-fledging benefits in wild pied babblers. Animal Behaviour 74, 1303-1309. Link
Ridley, A.R. & Raihani, N.J. 2007. Facultative response to a kleptoparasite by the cooperatively breeding pied babbler. Behavioral Ecology 18, 324-330. Link
Radford, A.N. & Ridley, A.R. 2006. Recruitment calling: a novel form of extended parental care in an altricial species. Current Biology 16, 1700-1704. Link
(b) Magazine articles
Ridley, A.R. 2011. Stealing the neighbours’ kids: kidnapping behaviour in social species. Wild Magazine
Ridley, A.R. 2011. Are you being fooled? Older birds are less likely to be deceived by cuckoos. Wild Magazine http://www.wildcard.co.za/blog.htm?action=view-post&id=2318
Ridley, A.R. & Thompson, A.M. 2010. Dominatricks: reproductive conflict between female southern pied babblers. Africa Birds & Birding 15, 30-34.
Ridley A.R & Raihani, N.J. 2007. Artful dodgers: the social dynamics of need and greed. Africa Birds & Birding 12, 56-59.
Ridley, A.R. 2006. Going gangbusters: group dynamics in pied babblers. Africa Birds & Birding 11, 50-57.
Humphries, D.J., Nelson-Flower, M.J., Bell, M.B.V., Finch, F.M. & Ridley, A.R. (in press). Vocal kin recognition in the cooperatively breeding southern pied babbler. Animal Behaviour.
Gibson Vega, A., Hall, M.L., Ridley, A.R., Cowen, S.J., Slender, A.L., Burbidge, A.H., Louter, M. & Kennington, W.J. (prov accept). Population genetic structure associated with a landscape barrier in the Western Grasswren (Amytornis textilis textilis). Ibis.
Hunt, K., Marais, L., Cunningham, S.J., Ridley, A.R., Moagi, L., Rose, S., McKechnie, A., Bourne, A.R. (in press). Camelthorn and blackthorn trees provide important resources for Southern Pied Babblers Turdoides bicolor in the Kalahari. Ibis.
Bourne, A.R., Ridley, A.R. & Cunningham, S.J. (in press). Helpers don't help when it's hot in a cooperatively breeding bird, the Southern pied babbler. Behavioural Ecology (Open Access link: academic.oup.com/beheco/advance-article/doi/10.1093/beheco/arad023/7123830?searchresult=1)
Walsh, S.L., Townsend, S.W., Engesser, S. & Ridley, A.R. 2023. Multi-level combinatoriality in magpie non-song vocalizations. Journal of the Royal Society Interface 20: 20220679. (Open access: royalsocietypublishing.org/doi/full/10.1098/rsif.2022.0679).
Dutour, M., Walsh, S., Blackburn, G. & Ridley, A.R. (in press). Western Australian magpies decode urgency in conspecific alarm calls. Behaviour 160(5), 393-408.
Soravia, C. Ashton, B.J., Thornton, A. & Ridley, A.R. 2022. General cognitive performance declines with age and is negatively related to fledging success in a wild bird. Proceedings of the Royal Society B: Biological Sciences 289(1989) 20221748 (Open Access: royalsocietypublishing.org/doi/full/10.1098/rspb.2022.1748)
Blackburn, G, Ridley, A.R., Dutour, M. (in press). Australian magpies discriminate between the territorial calls of intra and extra-group conspecifics. Ibis https://doi.org/10.1111/ibi.13151
Grueter, C.C., Ridley, A.R., Kaplin, B.A. & Matthews, J.A. (in press). Association patterns in a high-elevation chimpanzee community in Rwanda. Ethology, Ecology & Evolution.
Sollis, J.G., Ashton, B.J., Speechley, E.M. & Ridley, A.R. 2023. Repeated testing does not confound cognitive performance in the Western Australian magpie (Cracticus tibicen dorsalis). Animal Cognition 26(2), 579-588. doi.org/10.1007/s10071-022-01699-1
Soravia, C., Ashton, B.J. & Ridley, A.R. 2022. Periorbital temperature responses to natural air temperature variation in wild birds. Journal of Thermal Biology 109, 103323
Ashton, B.J., Thornton, A., Speechley, E.M. & Ridley, A.R. 2022. Does trappability and self-selection influence cognitive performance? Royal Society Open Science 9(9) 220473 (Open Access) royalsocietypublishing.org/doi/abs/10.1098/rsos.220473
Freeberg, T.M., Ridley, A.R., & d’Ettorre, P. (Editors). 2022. The Routledge International Handbook of Comparative Psychology (1st ed.). Routledge. https://doi.org/10.4324/9781003091868
Dutour, M., Ridley, A.R. & Randler, C. 2022. Is the urgency encoded in heterospecific alarm calls perceived by domestic chickens? Journal of Zoology 318(2) 84-90. (Open Access) https://doi.org/10.1111/jzo.13008
Ashton, B.J., Thornton, A., Cauchoix, M. & Ridley, A.R. 2022. Long term repeatability of cognitive performance. Royal Society Open Science 9(5) 220069. (Open Access: royalsocietypublishing.org/doi/full/10.1098/rsos.220069)
Ridley, A.R., Nelson-Flower, M.J., Humphries, D,J,. Wiley, E.M. & Kokko, H. 2022. Kidnapping intergroup young: an alternative strategy to maintain group size in the group-living pied babbler (Turdoides bicolor). Philosophical Transactions of the Royal Society Series B: Biological Sciences 377, 20210153. (Open Access: royalsocietypublishing.org/doi/full/10.1098/rstb.2021.0153)
Blackburn, G., Broom, E., Ashton, B.J., Thornton, A. & Ridley, A.R. 2022. Heat stress inhibits cognitive performance in wild Western Australian magpies (Cracticus tibicen dorsalis). Animal Behaviour 188, 1-11.
Cannell, B., Allen, P.J.D., Wiley, E.M., Radford, B., Surman, C.A., Ridley, A.R. 2022. The diet of brown boobies at a globally significant breeding ground is influenced by sex, breeding, sub-colony and year. Marine Ecology Progress Series 681, 227-245.
Bourne, A.R., Cunningham, S.J., Nupen, L.J., McKechnie, A.E. & Ridley, A.R. 2022. No sex-specific differences in the influence of high temperatures during early development on nestling mass and fledgling survival in the southern pied babbler Turdoides bicolor. Ibis 164, 304-312.
Humphries, D.J., Nelson-Flower, M.J., Bell, M.B.V., Finch, F. & Ridley, A.R. 2021. Kinship, dear enemies and costly combat: the effects of relatedness on territorial overlap and aggression in a cooperative breeder. Ecology & Evolution 11, 17031-17042.
Dutour, M., Kasper, J. & Ridley, A.R. 2021. Transfer of information between a highly social species and heterospecific community members. Behavioral Ecology & Sociobiology 75, 1-11.
Dutour, M., Walsh, S.L., Speechley, E.M. & Ridley, A.R. 2021. Female Western Australian magpies discriminate between familiar and unfamiliar human voices. Ethology 127, 979-985.
Bourne, A.R., Ridley, A.R., Spottiswoode, C.N. & Cunningham, S.J. 2021. Direct and indirect effects of high temperatures on fledging in a cooperatively breeding bird. Behavioural Ecology 32, 1212-1223.
Bourne, A.R., Ridley, A.R., McKechnie, A.E., Spottiswoode, C.N. & Cunningham, S.J. 2021. Dehydration risk is associated with reduced nest attendance and hatching success in a cooperatively breeding bird, the southern pied babbler Turdoides bicolor. Conservation Physiology 9, coab43 (Open Access)
Moagi, L.L., Bourne, A.R., Cunningham, S.J., Jansen, R., Ngcamphala, C.A., Ganswindt, A., Ridley, A.R. & McKechnie, A.E. 2021. Hot days are associated with short-term adrenocortical responses in a southern African arid-zone passerine bird. Journal of Experimental Biology 224(10): jeb242535. *Article chosen as Editor's Choice for issue, and 'Inside JEB' popular article for the paper can be found here: journals.biologists.com/jeb/article/224/10/jeb242790/268361/Extreme-heat-is-genuinely-stressful-for-southern
Ridley, A.R., Wiley, E.M., Bourne, A.R., Cunningham, S.J. & Nelson-Flower, M.J. 2021. Understanding the potential impact of climate change on the behaviour and demography of a social species: the pied babbler (Turdoides bicolor) as a case study. Advances in the Study of Behaviour 53, 225-266. Share link: https://www.sciencedirect.com/science/article/pii/S006534542100005X?dgcid=author
Soravia, C., Ashton, B.J., Thornton, A. & Ridley, A.R. 2021. The impacts of heat stress on animal cognition: implications for adaptation to a changing climate. WIRES Climate Change 12(4)e713. Share link: https://onlinelibrary.wiley.com/share/author/MA34MVKMW97VXDYXYIWP?target=10.1002/wcc.713
Matthews, J.K., Ridley, A.R., Kaplin, B. & Grueter, C.C. 2021. Ecological and social influences on party size, composition and gregariousness of chimpanzees (Pan troglodytes schweinfurthii) inhabiting a montane forest. Behavioural Ecology & Sociobiology 75, 1-9.
Ridley, A.R. & Nelson-Flower, M.J. 2021. Understanding the trade-off between cooperation and conflict in avian societies. In: Cooperation and conflict: biological mechanisms at the interface. Edited by Walter Wilcyzinski and Sarah F. Brosnan. Cambridge University Press, Cambridge, UK.
Dutour, M., Walsh, S.L. & Ridley, A.R. 2021. Australian magpies adjust their alarm calls according to predator distance. Bioacoustics 30(4), 458-468.
Bourne, A.R., Cunningham, S.J., Spottiswoode, C.N. & Ridley, A.R. 2020. Hot droughts compromise interannual survival across all group sizes in a cooperatively breeding bird. Ecology Letters 23,1776-1788.
Bourne, A.R., Cunningham, S.J., Spottiswoode, C.N. & Ridley, A.R. 2020. High temperatures drive offspring mortality in a cooperatively breeding bird. Proceedings of the Royal Society Series B - Biological Sciences 287: 20201140.
Bourne, A.R., Cunningham, S.J., Spottiswoode, C.N. & Ridley, A.R. 2020. Compensatory breeding in years following drought in a desert-dwelling cooperative breeder. Frontiers in Ecology and Evolution 8:190. www.frontiersin.org/articles/10.3389/fevo.2020.00190/abstract
Dutour, M & Ridley, A.R. 2020. Females sing more often and at higher frequencies than males in Australian magpies. Behavioural Processes 172, 104045.
Mirville, M.O., Ridley, A.R., Samedi, J.P.M., Vecellio, V., Ndagijimana, F., Stoinski. T. & Grueter, C.C. 2020. Intragroup behavioural changes following intergroup conflict in mountain gorillas (Gorilla beringei beringei). International Journal of Primatology 41, 382-400.
Matthews, J.K., Ridley, A.R., Kaplin, B. & Grueter, C.C 2020. A comparison of the efficacy of fecal sampling and direct feeding observations for quantifying the diet of a frugivorous primate. Current Zoology 66, 333-343.
Soh, M.C.K., Peh, K.S-H., Mitchell, N.J., Ridley, A.R., Butler, C.W. & Puan, C.L. 2019. Impacts of habitat degradation on tropical montane biodiversity and ecosystem services: a systematic map for identifying future research priorities. Frontiers in Forestry and Global Change 2:83 www.frontiersin.org/articles/10.3389/ffgc.2019.00083/full
(Open Access)
Ashton, B.J., Thornton, A. & Ridley, A.R. 2019. Larger group sizes facilitate the emergence and spread of innovations in a group-living bird. Animal Behaviour 158, 1-7.
Silvestri, A.J., Morgan, K. & Ridley, A.R. 2019. The association between evidence of a predator threat and responsiveness to alarm calls in Western Australian magpies (Cracticus tibicen dorsalis). PeerJ 7 e7572 (Open Access)
Matthews, J.K., Ridley, A.R., Niyigaba, P., Kaplin, B. & Grueter, C.C. 2019. Chimpanzee feeding ecology and fallback food use in the montane forest of Nyungwe National Park, Rwanda. American Journal of Primatology 82, e22971.
Pike, K.N., Ashton, B.J., Morgan, K. & Ridley, A.R. 2019. Social and morphological factors influence variation in offspring care in the cooperatively breeding Western Australian magpie. Frontiers in Ecology & Evolution. www.frontiersin.org/articles/10.3389/fevo.2019.00092/full (Open Access)
Ridley, A.R & Mirville, M.O. 2019. Utilising the research on intergroup conflict in non-human animals can help inform patterns of human intergroup conflict. Behavioral & Brain Sciences 42.
Walsh, S.L., Townsend, S.W. & Ridley, A.R. 2019. Investigating the potential for call combinations in a life-long vocal learner. Ethology 125, 362-368.
Jepsen, E.M., Ganswindt, A., Ngcamphalala, C.A., Bourne, A.R., Ridley, A.R. & McKechnie, A.E. 2019. Non-invasive monitoring of physiological stress in an Afrotropical arid-zone passerine bird, the southern pied babbler. General & Comparative Endocrinology 276, 60-68.
Bourne, A.R., McKechnie, A.E., Cunningham, S.J., Ridley, A.R., Woodborne, S.P. & Karasov, W. 2019. Non‐invasive measurement of metabolic rates in wild, free‐living birds using doubly labelled water. Functional Ecology 33, 162-174.
Ashton, B.J., Ridley, A.R. & Thornton, A. 2019. Smarter through group living: A response to Smulders. Learning & Behaviour, 47(4), 277-279.
Mirville, M.O., Ridley, A.R., Samedi, J.P.M., Vecellio, V., Ndagijimana, F., Stoinski, T.S. & Grueter, C.C. 2018. Factors influencing individual participation during intergroup interactions in mountain gorillas. Animal Behaviour 144, 75–86.
Mirville, M.O., Ridley, A.R., Samedi, J.P.M., Vecellio, V., Ndagijimana, F., Stoinski, T.S. & Grueter, C.C. 2018. Low familiarity and similar‘group strength’ between opponents increase the intensity of intergroup interactions in mountain gorillas (Gorilla beringei beringei)’, Behavioural Ecology and Sociobiology 72 11, doi:10.1007/s00265-018-2592-5
Ashton, B.J., Thornton, A. & Ridley, A.R. 2018. An intraspecific appraisal of the social intelligence hypothesis. Philosophical Transactions of the Royal Society of London Series B 317, 20170288.
Engesser, S., Ridley, A.R., Manser, M.B., Manser, A. & Townsend, S.W. 2018. Internal acoustic structuring of pied babbler recruitment cries specifies the form of recruitment. Behavioral Ecology 29, 1021-1030.
Wiley, E.M. & Ridley, A.R. 2018. The benefits of pair bond tenure in the cooperatively breeding pied babbler (Turdoides bicolor). Ecology and Evolution 8, 7178-7185
Ridley, A.R. & Mirville, M.O. 2018. The importance of understanding costs and benefits: a commentary on Christensen & Radford. Behavioral Ecology
Nelson-Flower, M.J., Flower, T.P. & Ridley, A.R. 2018. Sex differences in the drivers of reproductive skew in a cooperative breeder. Molecular Ecology 27, 2435-2446.
Nelson-Flower, M.J., Wiley, E., Flower, T.P. & Ridley, A.R. 2018. Individual dispersal decisions in a cooperative breeder: ecological constraints, the benefits of philopatry, and the social queue for dominance. Journal of Animal Ecology 87, 1227-1238
Ashton, B.J., Ridley, A.R., Edwards, E. & Thornton, A.N. 2018. Cognitive performance is linked to group size and affects fitness in Australian magpies. Nature 25503/doi:10.1038.
Engesser, S., Ridley, A.R. & Townsend, S.W. 2017. Element repetition rates encode functionally distinct information in pied babbler ‘clucks’ and ‘purrs’. Animal Cognition 20, 953-960.
Nelson-Flower, M.J. & Ridley, A.R. 2016. Nepotism and subordinate tenure in a cooperative breeder. Biology Letters 12(8) 20160365
Humphries, D.J. Finch, F.M., Bell, M.B.V. & Ridley, A.R. 2016. Vocal cues to identity: pied babblers produce individually distinct but not stable loud calls. Ethology 122, 609-619. onlinelibrary.wiley.com/doi/10.1111/eth.12508/full
Engesser, S., Ridley, A.R. & Townsend, S.W. 2016. Meaningful call combinations and compositional processing in the southern pied babbler. Proceedings of the National Academy of Sciences 113, 5976-5981 www.pnas.org/content/113/21/5976.abstract
Wiley, E.M. & Ridley, A.R. 2016. The effects of temperature on offspring provisioning in a cooperative breeder. Animal Behaviour 117, 187-195 www.sciencedirect.com/science/article/pii/S0003347216300653
Keynan, O & Ridley, A.R. 2016. Component, group and demographic Allee effects in a cooperatively breeding bird species, the Arabian babbler (Turdoides squamiceps). Oecologia 182, 153-161 link.springer.com/article/10.1007/s00442-016-3656-8
Keynan, O, Ridley, A.R. & Lotem, A. 2016. Task-dependent differences in learning by subordinate and dominant wild Arabian babblers. Ethology 122, 399-410.
Ridley, A.R. 2016. Southern pied babblers: the dynamics of conflict and cooperation in a group living society. in Cooperative breeding: studies of ecology, evolution and behaviour (Koenig, W.D. & Dickinson, J.S. eds). Cambridge University Press. Pp 115-132.
Mirville, M.O., Kelley, J.L., Ridley, A.R. 2016. Group size and associative learning in the Australian magpie (Cracticus tibicen dorsalis). Behavioral Ecology & Sociobiology 70, 417-427. Link
Ridley, A.R., Humphries, D.J. & Wiley, E.M. 2015. Is information from both quality signalling and social recognition really redundant? A commentary on Sheehan & Bergman. (Invited Commentary). Behavioral Ecology. Link
Nelson-Flower, M.J. & Ridley, A.R. 2015. Male-male competition is not costly to dominant males in a cooperatively breeding bird. Behavioral Ecology & Sociobiology 69, 1997-2004 .Link
Humphries, D.J., Finch, F.M., Bell, M.B.V. & Ridley, A.R. 2015. Calling where it counts: subordinate pied babblers target the audience of their vocal advertisements. PLoS One 10(7) e0130795. Link
Edwards, E. K., Mitchell, N.J. & Ridley, A.R. 2015. The impact of high temperatures on foraging behaviour and body condition in the Western Australian Magpie Cracticus tibicen dorsalis. Ostrich - Journal of African Ornithology (Special Edition in memory of Prof Phil Hockey) 86, 137-144. Link
Ridley, A.R. & Ashton, B.J. 2015. The benefits of an evolutionary framework for the investigation of teaching behaviour, and why the emphasis should be taken off humans as a benchmark. (Invited commentary). Behavioral and Brain Sciences.
Keynan, O., Ridley, A.R. & Lotem, A. 2015. Social foraging strategies and acquisition of a novel foraging skill in a cooperative breeder. Behavioral Ecology 26, 207-214. Link
Flower, T.P., Gribble, M. & Ridley, A.R. 2014. Deception by flexible alarm mimicry in an African bird. Science 344, 513-516. Link
Ridley, A.R., Wiley, E.M. & Thompson, A.M. 2014. The ecological benefits of interceptive eavesdropping. Functional Ecology 28, 197-205. Link Lay summary
Thompson, A.M. Ridley, A.R., Hockey, P.A.R., Finch, F.M., Britton, A. & Raihani, N.J. 2013. The influence of siblings on begging behaviour. Animal Behaviour 86: 811-819. Link
Nelson-Flower, M.J., Hockey, P.A.R., O’Ryan, C., English, S., Thompson, A.M., Bradley, K., Rose, R. & Ridley, A.R. 2013. Costly reproductive competition between females in a monogamous cooperatively breeding bird. Proceedings of the Royal Society of London Series B – Biological Sciences 280, 20130728. Link.
Thompson, A.M., Raihani, N.J., Hockey, P.A.R., Britton, A., Finch F. & Ridley, A.R. 2013. The influence of fledgling location on adult provisioning: a test of the blackmail hypothesis. Proceedings of the Royal Society of London Series B - Biological Sciences 280, 20130558. Link
Ridley, A.R., Nelson-Flower, M.J. & Thompson, A.M. 2013. Is sentinel behaviour safe? An experimental investigation. Animal Behaviour 85, 137-142. Link
Thompson, A.M. & Ridley, A.R. 2013. Do fledglings choose wisely? An experimental investigation into social foraging behaviour. Behavioral Ecology & Sociobiology 67, 69-78. Link
Ridley, A.R. & van den Heuvel, I.M. 2012. Is there a difference in reproductive performance between cooperative and non-cooperative species? A southern African comparison. Behaviour 149, 821-848. Link
Child, M.F., Flower, T.P. & Ridley, A.R. 2012. Investigating a link between bill morphology, foraging ecology and kleptoparasitic behaviour in the fork-tailed drongo Dicrurus adsimilis. Animal Behaviour 84, 1013-1022. Link
Flower, T.P., Child, M.F. & Ridley, A.R. 2013. The ecological economics of kleptoparasitism: payoffs from self-foraging versus kleptoparasitism. Journal of Animal Ecology 82, 245-255. Link
du Plessis, K.L., Martin, R.O., Hockey, P.A.R., Cunningham, S.J.C. & Ridley, A.R. 2012. The costs of keeping cool in a warming world: implications of high temperatures for foraging, thermoregulation and body condition of an arid-zone bird. Global Change Biology 18, 3063-3070. Link
Nelson-Flower, M.J., Hockey, P.A.R., O’Ryan, C. & Ridley, A.R. 2012. Inbreeding avoidance mechanisms: dispersal dynamics in cooperatively breeding pied babblers. Journal of Animal Ecology 81, 875-882. Link
Mzumara, T.I., Hockey, P.A.R. & Ridley, A.R. 2012. Re-assessment of the conservation status of the endangered yellow-throated apalis, Apalis flavigularis, of Malawi. Bird Conservation International 22, 184-192. Link
Golabek, K.A., Ridley, A.R. & Radford, A.N. 2012. Food availability affects strength of seasonal territorial behaviour in a cooperatively breeding bird. Animal Behaviour 83, 613-619. Link
Ridley, A.R. & Thompson, A.M. 2012. The effect of Jacobin cuckoo parasitism on the body mass and survival of young in a new host species. Ibis 154, 195-199. Link
Ridley, A.R. 2012. Invading together: the benefits of coalition dispersal in a cooperative bird. Behavioral Ecology & Sociobiology 66, 77-83. Link
Hollén, L.I., Bell, M.B.V., Wade, H.M., Rose, R., Russell, A., Niven, F., Ridley, A.R. & Radford, A.N. 2011. Ecological conditions influence sentinel decisions. Animal Behaviour 82, 1435-1441. Link
Hollén, L.I., Bell, M.B.V., Russell, A., Niven, F., Ridley, A.R., Radford, A.N. 2011 Calling by concluding sentinels: coordinating cooperation or revealing risk? PLoS One 6(10):e25010 (doi:10.1371/journal.pone.0025010). Link
Nelson-Flower, M.J., Hockey, P., O’Ryan, C. Raihani, N., du Plessis, M. & Ridley,A.R. 2011. Monogamous dominant pairs monopolize reproduction in the cooperatively breeding pied babbler. Behavioral Ecology 22, 559-565. Link
Ridley, A.R. & Thompson, A.M. 2011. Heterospecific egg destruction by wattled starlings and the impact on pied babbler reproductive success. Ostrich 82, 201-205. Link
Hockey, P.A.R., Sirami, C., Ridley, A.R., Midgley, G.F. & Babiker, H.A. 2011. Interrogating recent range changes in South African birds: confounding signals from land-use and climate change represent a challenge for attribution. Diversity & Distributions 17, 254-261. Link
Radford, A.N., Hollén, L.I., Bell, M.B.V. & Ridley, A.R. 2011 . Singing for your supper: sentinel calling by kleptoparasites can mitigate the costs to victims. Evolution 65, 900-906. Link
Ridley, A.R., Raihani, N.J. & Bell, M. B.V. 2010. Experimental evidence that sentinel behaviour is affected by risk. Biology Letters 6, 445-448. Link
Raihani, N.J., Nelson-Flower, M.J., Browning, L.E. & Ridley, A.R. 2010. Routes to breeding in cooperatively breeding pied babblers. Journal of Avian Biology 41, 681-686. Link
Bell, M.B.V., Radford, A.N., Smith, R.A., Thompson, A.M. & Ridley, A.R. 2010. Bargaining babblers: vocal negotiation of cooperative behaviour in a social bird. Proceedings of the Royal Society of London Series B – Biological Sciences 277, 3223-3228. Link
Raihani, N.J., Nelson-Flower, M.J., Browning, L.E., Moyes, K. & Ridley, A.R. 2010. Synchronous provisioning increases brood survival in cooperatively breeding pied babblers. Journal of Animal Ecology 79, 44-52. Link
Ridley, A.R. & Child, M.F. 2009. Specific targeting of host individuals by a kleptoparasitic bird. Behavioral Ecology & Sociobiology 63, 1119-1126. Link
Bell, M.B.V., Radford, A.N., Rose, R., Wade, H., & Ridley, A.R. 2009. The value of constant surveillance in a risky environment. Proceedings of the Royal Society of London Series B – Biological Sciences 276, 2997-3005. Link
Ridley, A.R. & Raihani, N.J. 2008. Task partitioning increases reproductive output in a cooperative bird. Behavioral Ecology 19, 1136-1142. Link
Raihani, N.J., Ridley, A.R., Browning, L.E. & Nelson-Flower, M.J. 2008. Juvenile female aggression in cooperatively breeding pied babblers: causes and contexts. Ethology 114, 452-458. Link
Radford, A.N. & Ridley, A.R. 2008. Close-calling regulates spacing between foraging competitors in the group-living pied babbler. Animal Behaviour 75, 519-527. Link
Ridley, A.R., Raihani, N.J & Nelson-Flower, M.J. 2008. The cost of being alone: the fate of floaters in a population of cooperatively breeding pied babblers. Journal of Avian Biology 39, 389-392. Link
Raihani, N.J. & Ridley, A.R. 2008. Experimental evidence for teaching in wild pied babblers. Animal Behaviour 75, 3-11. Link
Raihani, N.J & Ridley, A.R. 2008 . Parental aggression against dependent young results in task partitioning in a cooperative bird. Biology Letters 4, 24-26. Link
Ridley, A.R. 2007. Factors affecting offspring survival and development in a cooperative bird: social, maternal and environmental effects. Journal of Animal Ecology 76, 750-760. Link
Radford, A.N. & Ridley, A.R. 2007. Individuals in foraging groups may use vocal cues when assessing their need for anti-predator vigilance. Biology Letters 3, 249-252. Link
Ridley, A.R. & Huyvaert, K.P. 2007. Sex-biased preferential care in the cooperatively breeding Arabian babbler. Journal of Evolutionary Biology 20, 1271-1276. Link
Ridley, A.R., Child, M.F & Bell, M.B.V. 2007. Interspecific audience effects on the alarm-calling behaviour of a kleptoparasitic bird. Biology Letters 3, 589-591. Link
Raihani, N.J. & Ridley, A.R. 2007. Variable fledging age according to group size: tradeoffs in a cooperative bird. Biology Letters 3, 624-627. Link
Ridley, A.R & Raihani, N.J. 2007. Variable post-fledging care in a cooperative bird: causes and consequences. Behavioral Ecology 18, 994-1000. Link
Raihani, N.J. & Ridley, A.R. 2007. Adult vocalisations during provisioning: offspring responses and post-fledging benefits in wild pied babblers. Animal Behaviour 74, 1303-1309. Link
Ridley, A.R. & Raihani, N.J. 2007. Facultative response to a kleptoparasite by the cooperatively breeding pied babbler. Behavioral Ecology 18, 324-330. Link
Radford, A.N. & Ridley, A.R. 2006. Recruitment calling: a novel form of extended parental care in an altricial species. Current Biology 16, 1700-1704. Link
(b) Magazine articles
Ridley, A.R. 2011. Stealing the neighbours’ kids: kidnapping behaviour in social species. Wild Magazine
Ridley, A.R. 2011. Are you being fooled? Older birds are less likely to be deceived by cuckoos. Wild Magazine http://www.wildcard.co.za/blog.htm?action=view-post&id=2318
Ridley, A.R. & Thompson, A.M. 2010. Dominatricks: reproductive conflict between female southern pied babblers. Africa Birds & Birding 15, 30-34.
Ridley A.R & Raihani, N.J. 2007. Artful dodgers: the social dynamics of need and greed. Africa Birds & Birding 12, 56-59.
Ridley, A.R. 2006. Going gangbusters: group dynamics in pied babblers. Africa Birds & Birding 11, 50-57.
Other publications (PhD students)
(a) Peer-reviewed publications
Keynan, O. & Yosef, R. 2010. Temporal changes and sexual differences of impaling behavior in Southern Grey Shrike (Lanius meridionalis). Behavioral Processes 85, 47-51.
Keynan, O. & Yosef, R. 2010. Annual precipitation affects reproductive success of the Southern Grey Shrike (Lanius meridionalis). The Wilson Journal of Ornithology 122(2), 334-339.
Turner, E.C., Granroth, M.V., Johnson, H.R., Thompson, A.M., Froy, H., German, R.N. & Holdgate, R. 2009. Habitat preference and dispersal of the Duke of Burgundy butterfly (Hamearis lucina) on an abandoned chalk quarry in Bedfordshire, UK. Journal of Insect Conservation 13, 475-486.
(b) Magazine articles
Keynan, O. & Leshem, Y. 2009 (in Hebrew) Bird migration along the Dead Sea Rift: Science-Environment-Tourism-Education. Salt of the Earth- a series for Dead Sea studies 4, 56-76.
Babbler research theses (completed)
Wiley, E.M. 2017. Examining how multilevel population dynamics and climate influence breeding behaviour, within-group stability and demography in a cooperatively breeding bird. PhD thesis, University of Western Australia.
Engesser, S. 2017. Vocal combinations in the Southern pied babbler (Turdoides bicolour) and the chestnut-crowned babbler (Pomatostomus ruficeps): implications for the evolution of human language. PhD thesis, Zurich University.
Westrip, J.S. 2016. Organisation and development of anti-predator behaviour in a cooperative breeder. PhD thesis, Edinburgh University.
Keynan, O. 2015. Effect of group size and composition on individual behavior, group dynamics and population regulation in the Arabian Babbler (Turdoides squamiceps). PhD thesis, Macquarie University & Tel Aviv University (co-tutelle).
Humphries, D.J. 2013. The mechanisms and function of social recognition in the cooperatively breeding southern pied babbler, Turdoides bicolor. PhD thesis, Macquarie University
Thompson. A.M. 2013. Post-fledgling begging and development in southern pied babblers (Turdoides bicolor). PhD thesis, University of Cape Town
du Plessis, K.L. 2011. Heat tolerance of southern pied babblers in the Kalahari desert - how will they respond to climate change? MSc thesis, University of Cape Town.
Golabek, K.A. 2011. Vocal communication and the facilitation of social behaviour in the southern pied babbler (Turdoides bicolor). PhD thesis, University of Bristol.
Nelson-Flower, M.J. 2010. Kinship and its consequences in the cooperatively breeding southern pied babbler (Turdoides bicolor). PhD thesis, University of Cape Town.
Raihani, N.J. 2008. Cooperation and conflict in pied babblers. PhD thesis, Cambridge University.
Stephenson, J. 2007. Is bigger necessarily better? The influence of weight on breeding success. Hons thesis, University of Cape Town.
Child, M.F. 2006. Cunning kleptoparasitism: dynamic strategies to obtain food rewards. Hons thesis, University of Cape Town.
Lyons, C. 2006. The effect of environmental versus social factors on changes in territory size in the pied babbler. Hons thesis, University of Cape Town.
Ridley, A.R. 2003. The causes and consequences of helping behaviour in the cooperatively breeding Arabian babbler. PhD thesis, Cambridge University.
Engesser, S. 2017. Vocal combinations in the Southern pied babbler (Turdoides bicolour) and the chestnut-crowned babbler (Pomatostomus ruficeps): implications for the evolution of human language. PhD thesis, Zurich University.
Westrip, J.S. 2016. Organisation and development of anti-predator behaviour in a cooperative breeder. PhD thesis, Edinburgh University.
Keynan, O. 2015. Effect of group size and composition on individual behavior, group dynamics and population regulation in the Arabian Babbler (Turdoides squamiceps). PhD thesis, Macquarie University & Tel Aviv University (co-tutelle).
Humphries, D.J. 2013. The mechanisms and function of social recognition in the cooperatively breeding southern pied babbler, Turdoides bicolor. PhD thesis, Macquarie University
Thompson. A.M. 2013. Post-fledgling begging and development in southern pied babblers (Turdoides bicolor). PhD thesis, University of Cape Town
du Plessis, K.L. 2011. Heat tolerance of southern pied babblers in the Kalahari desert - how will they respond to climate change? MSc thesis, University of Cape Town.
Golabek, K.A. 2011. Vocal communication and the facilitation of social behaviour in the southern pied babbler (Turdoides bicolor). PhD thesis, University of Bristol.
Nelson-Flower, M.J. 2010. Kinship and its consequences in the cooperatively breeding southern pied babbler (Turdoides bicolor). PhD thesis, University of Cape Town.
Raihani, N.J. 2008. Cooperation and conflict in pied babblers. PhD thesis, Cambridge University.
Stephenson, J. 2007. Is bigger necessarily better? The influence of weight on breeding success. Hons thesis, University of Cape Town.
Child, M.F. 2006. Cunning kleptoparasitism: dynamic strategies to obtain food rewards. Hons thesis, University of Cape Town.
Lyons, C. 2006. The effect of environmental versus social factors on changes in territory size in the pied babbler. Hons thesis, University of Cape Town.
Ridley, A.R. 2003. The causes and consequences of helping behaviour in the cooperatively breeding Arabian babbler. PhD thesis, Cambridge University.
Other species research theses (completed)
Matthews, J.K. 2019. Ecological and social factors influencing the diet and grouping behaviour of chimpanzees in a montane forest environment (Pan troglodytes shweinfurthii). PhD thesis, University of Western Australia.
Soh, M.C.K. 2019. Effects of environmental change on montane amphibians and birds in peninsular Malaysia. PhD thesis, University of Western Australia.
Mirville, M.O. 2018. The causes and consequences of intergroup interactions in mountain gorillas (Gorilla beringei beringei). University of Western Australia.
Ashton, B. 2017. The causes and consequences of individual variation in cognitive ability in the cooperatively breeding Australian magpie (Cracticus tibicen dorsalis). PhD thesis, University of Western Australia.
Mirville, M.O. 2013. The effect of group size on innovative learning behaviour in the cooperative Australian magpie. Hons thesis, University of Western Australia.
Wong, Q. 2014. Are artificial hollows a good management tool for Carnaby's cockatoo? A comparison of microclimates in artificial versus natural hollows. Hons thesis, University of Western Australia.
Edwards, E. 2014. The impacts of heat on foraging effort and reproductive behaviour in Australian magpies (Cracticus tibicen dorsalis). Hons thesis, University of Western Australia.
Matthews, J.K. 2019. Ecological and social factors influencing the diet and grouping behaviour of chimpanzees in a montane forest environment (Pan troglodytes shweinfurthii). PhD thesis, University of Western Australia.
Soh, M.C.K. 2019. Effects of environmental change on montane amphibians and birds in peninsular Malaysia. PhD thesis, University of Western Australia.
Mirville, M.O. 2018. The causes and consequences of intergroup interactions in mountain gorillas (Gorilla beringei beringei). University of Western Australia.
Ashton, B. 2017. The causes and consequences of individual variation in cognitive ability in the cooperatively breeding Australian magpie (Cracticus tibicen dorsalis). PhD thesis, University of Western Australia.
Mirville, M.O. 2013. The effect of group size on innovative learning behaviour in the cooperative Australian magpie. Hons thesis, University of Western Australia.
Wong, Q. 2014. Are artificial hollows a good management tool for Carnaby's cockatoo? A comparison of microclimates in artificial versus natural hollows. Hons thesis, University of Western Australia.
Edwards, E. 2014. The impacts of heat on foraging effort and reproductive behaviour in Australian magpies (Cracticus tibicen dorsalis). Hons thesis, University of Western Australia.
