Abstract

The home ranges of 4 male and 2 female Black Grouses in the Mercantour National Park, south-east France, were studied by radiotelemetry. The areas ranged from 69.5 to 236 ha for males, and from 98 to 130 ha for females. These home ranges overlapped broadly, and all were included within park limits. Tourism is a potential disturbing factor for Black Grouse in the Mercantour National Park. The percentage occurence of these birds was indeed low within a 50 m wide strip on each side of the two paths studied. However, beyond this 50 m limit, the distribution of the birds was mostly influenced by the structure of the vegetation.

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