Willow bud and shoot foraging by ptarmigan in relation to snow level in NW Finnish Lapland

Author: Hakkarainen Helena   Virtanen Risto   Honkanen Jani   Roininen Heikki  

Publisher: Springer Publishing Company

ISSN: 0722-4060

Source: Polar Biology, Vol.30, Iss.5, 2007-04, pp. : 619-624

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