Yelkouan shearwater Puffinus yelkouan presence and behaviour at colonies: not only a moonlight question

Comptes rendus biologies
Karen BourgeoisJérôme Legrand

Abstract

We describe and test the influence of several environmental and biological factors on the presence and activity patterns of the Mediterranean endemic yelkouan shearwater Puffinus yelkouan at colonies. Bird arrival at breeding sites is highly correlated with nautical dusk for moonless or slightly moonlit nightfalls and correlated with moonset when the moon is visible. Breeding cycle and wind speed affect both the arrival times and presence at colonies. Bird activity also varies throughout the night and sex ratio on colonies throughout the breeding cycle in relation to breeding duties. Breeder and non-breeder behaviour particularly differs in the time spent on the ground outside burrows, without protection. Finally, factors other than moonlight can be essential in determining the presence and behaviour of petrels and shearwaters at breeding sites, and we need to determine how differences in behaviour at colonies could be related to differential predation risk.

References

May 17, 2006·Trends in Ecology & Evolution·Jerald B Johnson, Kristian S Omland
Apr 17, 2007·Comptes rendus biologies·Karen Bourgeois, Eric Vidal

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Citations

Mar 25, 2010·General and Comparative Endocrinology·Samuel RiouKeith C Hamer
Mar 19, 2014·Conservation Biology : the Journal of the Society for Conservation Biology·Abraham L BorkerDonald A Croll
Jan 30, 2016·Journal of Biological Rhythms·Airam RodríguezPeter Dann

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