Birds choose nest sites that match their own camouflage

Aug 15, 2017

Animals that rely on camouflage can choose the best places to conceal themselves based on their individual appearance, our work in Zambia has found. Studying nine species of nightjar, plover and courser, we found that individual birds adjust their choices of where to nest based on their specific patterns and colours of their eggs (in the case of plovers and coursers that flee at long range) or their plumage (in the case of nightjars that sit tight on their eggs). Read more in the full paper published in Nature Ecology & Evolution, by Martin StevensJolyon TrosciankoJared Wilson-Aggarwal and Claire Spottiswoode; see also news articles about this research in The TelegraphThe Daily MailThe International Business Times and Cosmos Magazine, and Jared’s behind-the-paper blog on the journal website.

News

New paper on imperfect egg mimicry

Our paper “Combined measures of mimetic fidelity explain imperfect mimicry in a brood parasite-host system” has just been published in the journal Biology Letters. This study was led by Tanmay Dixit, and carried out together with Gary Choi, Salem al-Mosleh, Jess Lund, Jolyon Troscianko, Collins Moya, L Mahadevan, and Claire Spottiswoode, as part of a collaboration between our group and Prof. Mahadevan and his lab at Harvard University. Together we combined mathematical tools and field experiments in Zambia to quantify a key difference – “squiggle” markings – between the eggs of hosts (tawny-flanked prinias) and parasites (cuckoo finches). We showed that suboptimal behaviour on the part of prinias allows cuckoo finches to get by with an imperfect copy of prinia eggs.

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New paper on host aggression and hawk mimicry

Our paper “Aggressive hosts are undeterred by a cuckoo’s hawk mimicry, but probably make good foster parents” has just been published in the journal Proceedings of the Royal Society B. In the paper, we investigate the costs and benefits to the African cuckoo of specializing on a highly aggressive host species, the fork-tailed drongo.

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African Cuckoos Team at the Pan-African Ornithological Congress

The African Cuckoos Team had a fantastic time at the Pan-African Ornithological Congress (PAOC15), this year held in Vic Falls, Zimbabwe. Dr Chima Nwaogu gave a plenary talk on “Differing Priorities in the Timing of Annual Life History Events”, while Professor Claire Spottiswoode and Silky Hamama presented during a roundtable session on communities in conservation and research. Silky also presented a poster, with Claire, Jess Lund, Mairenn Attwood and Cameron Blair each giving research talks as well. 

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