La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Time budget of Coots wintering on flooded freshwater meadows
Auteurs :	Keld Henriksen, Auteur
Type de document :	Article
Dans :	Dansk Ornitologisk Forenings Tidsskrift (94(1) 2000)
Article en page(s) :	43-44
Langues:	Anglais
Résumé :	The daily time budget of Coots Fulica atra was calculated from 36 hours of observation during January and February 1997-1999 on flooded meadows at Lake Brabrand, eastern Jutland. Groups of 5-66 Coots were scan-sampled (Altmann 1974) every three minutes for an hour. The day was divided into three time periods, 08:00-11:00, 11:00-14:00 and 14:00-17:00. Feeding and swimming were the dominant activities (Table 1) and most birds were feeding at the water surface. No differences in activity partitioning were detected among the time periods. Feeding activity, however, increased significantly from 72% in January to 78% in February.

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