Strategic placement of Rock Ptarmigan Lagopus mutanests adjacent to boulders
CAPSULE: Rock Ptarmigan place their nests adjacent to boulders, in their lee and on their sunnier aspects. AIMS: To investigate the proximity and orientation of Rock Ptarmigan nests in relation to boulders and vegetation height. METHODS: The distances from boulders of 61 Rock Ptarmigan nests and 60 random points were compared. Orientation variables of nests from boulders were analysed with circular statistical formulae. RESULTS: Rock Ptarmigan nests were closer to boulders than random...[Show more]
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