La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Age at first breeding of Bank Cormorants, Phalacrocorax neglectus, and Cape Cormorants, P-capensis
Auteurs :	R. J. M. Crawford, Auteur ; B. M. Dyer, Auteur ; L. Upfold, Auteur ; V. L. Ward, Auteur
Type de document :	Article
Dans :	Ostrich (72(3-4) SEP 2001)
Article en page(s) :	145-148
Langues:	Anglais
Résumé :	Some Bank Cormorants, Phalacrocorox neglectus, breed when two years old, but others defer breeding until aged three years. Their mean age at breeding is about 2.5 years. Although some Cape Cormorants, P. capensis, breed when 1.5 years old or less, their breeding success may be poor at this age and the usual pattern of summer breeding probably means that most do not breed until they are about two years old. Poor feeding conditions may cause postponement of breeding by Cape Cormorants until they are three years old.

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