Energetic and population considerations of sharp-tailed grouse in the aspen parkland of Canada / by Patrick John Caldwell.
Material type:
TextSeries: Thesis ; (Ph.D.)Publication details: Manhattan, KS : Kansas State University, 1976.Description: 109 leaves : ill., maps ; 28 cmOnline resources: Abstract: Techniques to determine age and sex of sharp-tailed grouse (Pedioecetes phasianellus) using primary shaft measurements are described. Mean ratios of juvenile and adult primary 9 calamus diameter/primary 8 calamus diameter differed signifcantly so that only one individual in 1000 should be misclassified using the method. Primary 9 calamus diameters of juvenile and adults also differed significantly, but 116 individuals in 1000 would be misclassified. Primary 8 and 9 shaft lengths were significantly different between sexes. Approximately half of 1000 individuals would be misclassified as to sex by shaft lengths.The importance of the primary 9/8 calamus diameter ratio in separating age classes may be applicable to other Gallinaceous birds with similar molt patterns. Separation of sharp-tailed grouse into sex and age classes is relatively easy during molt and for 6 to 7 months after annual, late summer molt. Sex is determined by sex-specific plumage of the crown and central two tail feat
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Electronic Report
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Electronic Library | Non-fiction | CAL (Browse shelf(Opens below)) | Available | 1419 |
Thesis(Ph.D.)--Kansas State University, 1976.
Includes bibliographical references.
Techniques to determine age and sex of sharp-tailed grouse (Pedioecetes phasianellus) using primary shaft measurements are described. Mean ratios of juvenile and adult primary 9 calamus diameter/primary 8 calamus diameter differed signifcantly so that only one individual in 1000 should be misclassified using the method. Primary 9 calamus diameters of juvenile and adults also differed significantly, but 116 individuals in 1000 would be misclassified. Primary 8 and 9 shaft lengths were significantly different between sexes. Approximately half of 1000 individuals would be misclassified as to sex by shaft lengths.The importance of the primary 9/8 calamus diameter ratio in separating age classes may be applicable to other Gallinaceous birds with similar molt patterns. Separation of sharp-tailed grouse into sex and age classes is relatively easy during molt and for 6 to 7 months after annual, late summer molt. Sex is determined by sex-specific plumage of the crown and central two tail feat