La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Aberrant plumage in the Yellow-billed Pintail Anas georgica
Auteurs :	Robert E. Wilson, Auteur ; Thomas H. Valqui, Auteur ; Kevin G. McCracken, Auteur
Type de document :	Article
Dans :	Wildfowl (56 2006)
Article en page(s) :	192-196
Langues:	Anglais
Résumé :	Plumage aberrations are common, particularly in waterfowl. There have been numerous proposed causes including the retention of ancestral plumage characters that contain phylogenetic information. A partial white neck ring was observed in Yellow-billed Pintail Anas georgica spinicauda near Cusco, Peru. Non-typical white neck rings have been reported in other waterfowl species. Although the exact cause is unclear, its reoccurrence in other species and the consistent placement suggest that this unusual plumage could be of evolutional significance.

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