La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Diet of moulting King Elders Somateria spectabilis at Disko island, west Greenland
Auteurs :	O. Frimer, Auteur
Type de document :	Article
Dans :	Ornis Fennica (74(4) 1997)
Article en page(s) :	187-194
Langues:	Anglais
Résumé :	During the autumns of 1990-1992, 109 moulting King Elders Somateria spectabilis were collected at Disko Island, West Greenland, for analysis of stomach contents. All collected birds had food in their stomachs. The mean number of prey items per stomach was 11.1. Moulting King Elders had a varied diet (minimum 41 prey species), with mollusks comprising the bulk of the food. Bivalves of 21-40 mm length occurred more frequently in the stomachs than did other size categories of bivalves. There was no marked difference in food composition between sex and age classes of elders, and the diet varied only slightly between the study years. Female elders depend strongly on a high prey density owing to their late arrival in the area and shorter day lengths.

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