La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Partial clutch loss in Wood Ducks Aix sponsa nesting near Ottawa, Canada
Auteurs :	M. L. Mallory, Auteur
Type de document :	Article
Dans :	Wildfowl (54 2003)
Article en page(s) :	63-70
Langues:	Anglais
Résumé :	Partial clutch loss during egg-laying and incubation was examined in Wood Ducks Aix sponsa nesting near Ottawa, Ontario. Over four years, partial clutch loss occurred in 20% of nests, accounting for 2% of all eggs laid. Missing eggs did not appear to be the result of predation. Larger or early clutches were no more likely than smaller or later clutches to have eggs disappear. Wood Duck eggs did not disappear more often from Wood Duck nests that also contained Hooded Merganser Mergus cucullatus eggs, but Wood Duck eggs laid in Hooded Merganser nests disappeared more than host merganser eggs.

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