Spatial Separation of Sexes in Rock and Willow Ptarmigan in Winter

Autor:	Robert B. Weeden
Rok vydání:	1964
Předmět:	geography geography.geographical_feature_category Willow ptarmigan biology Ecology Spring (hydrology) Lagopus Fish Animal Science and Zoology biology.organism_classification Ecology Evolution Behavior and Systematics
Zdroj:	The Auk. 81:534-541
ISSN:	1938-4254 0004-8038
DOI:	10.2307/4082737
Popis:	THIS paper reports information on spatial separation of the sexes in both Rock Ptarmigan (Lagopus mutus) and Willow Ptarmigan (L. lagopus) in winter in Alaska. The data include observations of the autumnal movement of female Rock Ptarmigan from alpine breeding areas to wintering ranges below timberline, observations of the reverse movement in spring, and results of examinations of specimens taken in winter. I first noticed segregation of sexes in ptarmigan in 1959 while collecting winter specimens incidental to research for the Alaska Department of Fish and Game. Most data were obtained in central Alaska from 1959 through 1963.
Databáze:	OpenAIRE
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