La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Laying a big egg on a little ledge: does it help a female Common Guillemot if Dad's there?
Auteurs :	Michael P. Harris, Auteur ; Sarah Wanless, Auteur
Type de document :	Article
Dans :	British Birds (99(5) MAY 2006)
Article en page(s) :	230-235
Résumé :	Female Common Guillemots Uria aalge face the challenge of laying a large egg on a cliff ledge, often surrounded by tetchy neighbours. We documented the laying of 754 eggs, during 82% of which the male was present. The presence of the male had no effect on either the short-term survival of the egg or the chances of a chick successfully leaving the colony. Male attendance at laying may be largely fortuitous, resulting from the long periods that he is present for other purposes.

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