La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Notes on the reproductive biology of ptarmigan (Lagopus mutus) in Greenland
Auteurs :	Manfred Lieser, Auteur ; Marek Zakrzewski, Auteur
Type de document :	Article
Dans :	Ornithologischer Anzeiger (44(1) JUL 2005)
Article en page(s) :	25-29
Résumé :	In four years we collicted information about the reproductive biology of ptarmigan in North-East Greenland. The data correspond well to that from other parts of the species' range. The average clutch size was 8.7 (7-12) eggs. The earliest day of egg-laying was the 511 of June, incubation started on the 18(th) of June (both in 1998). The beginning of laying and incubation is variable (individually and anually) due to polygyny and atmospheric conditions. The activity pattern of young chicks shows a rapid shift between feeding and brooding and is strongly influenced by the weather.

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