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Age and Sex Identification From Wings of Sage-Grouse
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Age and Sex Identification From Wings of Sage-Grouse
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Age and Sex Identification From Wings of Sage-Grouse
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Journal Article
Age and Sex Identification From Wings of Sage-Grouse
2015
Overview
We redefine and clarify procedures to classify sex and age (juveniles, yearlings, adults, and breeding-age) of greater (Centrocercus urophasianus) and Gunnison sage-grouse (C. minimus) from wings. Existing keys for greater sage-grouse age and sex classification do not incorporate more recent information on timing and sequence of molt or regional variation. We evaluated keys with the aid of gonadally inspected, hunter-harvested sage-grouse in Colorado (1973–1990) and with birds captured and measured in Washington (1992–1997) and Oregon (2008–2012). The technique is accurate and transferable among biologists who have basic training in reading a key and examining wings (primaries, secondaries, tertials, and coverts). Accurate information on sex and age of grouse, particularly during harvest, is a fundamental component of our understanding of population dynamics, which ultimately enables improved management.
Publisher
Wildlife Society,Wiley
