Seasonal changes in crop content of the Svalbard ptarmigan Lagopus mutus hyperboreus

Crop contents of Svalbard Ptarmigan have been examined. For chicks younger than 25 days the crops contained almost exclusively bulbils of Polygonum viuiparum. High incidence of this food item was also found in crops from adult birds during late summer and autumn (July-October). Midwinter (November-...

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Veröffentlicht in:	Polar research 1985-01, Vol.3 (2), p.239-245
Hauptverfasser:	Unander, Sigmund, Mortensen, Atle, Elvebakk, Arve
Format:	Artikel
Sprache:	eng
Online-Zugang:	Volltext
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