Temporal changes in age and sex ratios of forest grouse harvested in northeastern oregon

Ratio of immature (young of the year) grouse to adult birds (I:A) in the harvest of upland game birds is commonly used as an index to annual reproduction; however, I:A ratios can vary as the season progresses producing biased estimates. We analyzed I:A ratios in the daily harvest of dusky grouse (De...

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Veröffentlicht in:	The Journal of wildlife management 2012-02, Vol.76 (2), p.356-362
Hauptverfasser:	Hansen, Michael C., Hagen, Christian A., Loughin, Thomas M., Budeau, David A., Coggins, Victor L., Reishus, Brandon S.
Format:	Artikel
Sprache:	eng
Schlagworte:	Age groups Agricultural seasons Animal wings blue grouse Bonasa umbellus Dendragopus obscurus dusky grouse Fowling Grouse harvest ratios Harvesting seasons Hunting seasons immature Immatures Oregon Population Ecology productivity Ratios ruffed grouse Wildlife management
Online-Zugang:	Volltext
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