Finding your mate in a seabird colony: contrasting strategies of the Guillemot Uria aalge and King Penguin Aptenodytes patagonicus: Capsule King Penguins recognize their mates by voice, but Guillemots do not need acoustic cues even though their calls show individual variation.
Methods Observations were made on breeding Guillemots and King Penguins. Calls made by birds returning to their mates were recorded, the signals digitized and the calls analysed. Calls were later played back to the mates of the birds concerned and the effects noted on both them and their neighbours.
Results Both Guillemots and King Penguins emitted calls on return to the breeding site which contained individual signatures and were therefore potentially usable for mate recognition. In King Penguins, auditory recognition was essential for finding a mate, whereas in Guillemots most of the arriving birds located their mate in a dense crowd of conspecifics without the help of acoustic signals. Guillemots could differentiate neighbours from strangers without auditory cues.
Conclusion Calls are essential for the successful identification of mates by King Penguins but not by Guillemots.
Document Type: Research Article
Affiliations: 1: Centre de Recherches et de Formation en Eco-Ethologie, 09350 Boult aux Bois, France 2: Centre for Ecology and Hydrology, Banchory Research Station, Hill of Brathens, Banchory, Kincardineshire AB31 4BW, UK 3: School of Biology, University of St Andrews, Fife KY16 9TS, UK
Publication date: March 1, 2004