Birds of Indian Subcontinent

Geographic Orientation of American Tetraonidae

Publication Type:Journal Article
Year of Publication:1963
Authors:Aldrich, JW
Journal:The Journal of Wildlife Management
Date Published:1963
ISBN Number:0022541X
Keywords:Bonasa, Bonasa umbellus, Phasianidae, Philomachus, Philomachus pugnax, Scolopacidae
Abstract:Differentiation of both species and genera within the grouse family (Tetraonidae) has been pronounced in North America. Each of its species has become adapted to specific types of habitat. These vary greatly, from aretic tundra to northern desert scrub and humid forest of both grouse (Centrocerous urophasianus), with 2 races, to the ruffed grouse (Bonasa umbellus), with 13. The races tend to be correlated with the ecological climax area in which they live. There are a few cases in which this correlation is not obvious and racial variation seems to be entirely the result of geographical isolation. The present status of grouse depends chiefly on the extent to which modification of required habitat has taken place; the greatest changes have occurred in the grasslands and the least in the aretic-alpine areas.
Short Title:The Journal of Wildlife Management
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