Abstracts » Zoology and wildlife conservation

Effects of summer sheep grazing on browse nutritive quality in autumn and winter

Article Abstract:

The effects of summer sheep grazing on the nutritive quality of browse for wild ungulates were investigated. Six shrub species commonly browsed by white-tailed deer, Rocky Mountain elk, and moose on transitory range in northern Idaho were considered. Results showed that early-summer grazing improved both autumn and winter browse quality in redstem ceanothus, rose, ninebark and snowberry as well as browse quality of thimbleberry in autumn. On the other hand, late-summer sheep grazing reduced autumn browse quality in rose and snowberry while improving browse quality of rose in winter.

Food and nutrition, Sheep, Animal nutrition, Grazing, Browse, Browse (Plant)

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Long-term trends of Bald Eagles in winter on the Skagit River, Washington

Article Abstract:

Research is presented concerning the assessment of Bald Eagle populations on a 19-kilometer reach of the Skagit River, Washington, between 1978 and 2000. The population on a contiguous reach of 24-kilometers between 1982 and 2000 is also studied.

Natural history, Bird migration, Bald eagle, Skagit River

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Winter survival rates of American woodcock in south central Louisiana

Article Abstract:

Research is presented concerning the survival rates of 160 radiotagged female woodcocks in a south central Louisiana public hunting area between 1994 and 1996. The primary cause of death was found to be avian predation.

Patient outcomes, Mortality, Woodcock, American, Woodcocks, Game and game-birds, Game animals, Game birds

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