Dispersion and habitat selection of displaying male black grouse in the Mont Avic, natural park, Western Italian Alps
1995
Bocca, M. (Parco Naturale Monte Avic, Champdepraz, Aosta (Italy))
This study describes locations of displaying male Black Grouse in spring on a 1940 ha area which included dense mountain pine forests, sparse larch woods and a timberline with rhododendron and several species of Vaccinium. Displaying males were widely dispersed, with a limited tendency to form stable leks. The maximum number of males at any display site was five, with birds tending usually to display solitary, especially in the dense mountain pine woods. Open larch woods and subalpine moorlands were significantly selected for display. Few displaying birds were recorded in subalpine pastures, which are usually thought to be ideal lek sites. No displaying males were seen on scree slopes next to woods, even when snow completely covered the rocks
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