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Filtering by: Conference section Foliage & Seed Insects Remove constraint Conference section: Foliage & Seed Insects Advisor Crawford, John A. Remove constraint Advisor: Crawford, John A.

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  • Response of brood-rearing habitat of sage grouse to prescribed burning in Oregon

    Creator:
    Pyle, William H. (William Hanson), 1957-
    Abstract:
    Decline of western sage grouse (Centrocercus urophasianus phaios) in Oregon may be related to the reduced availability of foods in upland sagebrush (Artemisia)-grasslands used for brood-rearing. The goal of this study was to determine primary foods of chicks and the short-term response of brood-rearing habitat to prescribed burning at Hart...
    Resource Type:
    Masters Thesis
    Full Text:
    insects than older chicks. As chicks matured, annual forb use diminished, insect intake declined, and

  • An analysis of guild structure of avian communities, Columbia River, Oregon

    Creator:
    Noyes, Cecilia Lea Barham
    Abstract:
    Effects of habitat and season on guild structure of avian communities were examined for islands in the estuary zone of the Columbia River, Oregon. Bird species were classified into guilds according to their major food item, typical foraging substrate, and foraging behavior. Variation in community structure indices (number of guilds,...
    Resource Type:
    Masters Thesis
    Full Text:
    diet (insect, nectar, 2 seed) or foraging mode (searching, drilling, predator). Salt (1953) found

  • Foraging ecology of California quail and response of key foods to habitat manipulations in western Oregon

    Creator:
    Blakely, Kevin L.
    Abstract:
    Seasonal diet and food selection of California quail (Callipepla californica) were studied at E.E. Wilson Wildlife Area, Oregon, during 1985 to 1987. Analysis of diets of 105 quail, along with information from 117 quail taken during 1976 to 1978 revealed 14 key plant foods. Collectively, the key foods composed 87%...
    Resource Type:
    Masters Thesis
    Full Text:
    ). Leopold (1977:173) stated that more insects are consumed in wet than in dry years. However, most diet

  • The ecology of Mountain Quail in Oregon

    Creator:
    Pope, Michael D. (Michael Dickens)
    Abstract:
    Mountain Quail (Oreortyx pictus) populations have declined in many areas of the western Great Basin during the past century. Yet the life history of this species is little known. From 1997 to 2000, I studied radio-marked Mountain Quail in Hell's Canyon in northeastern Oregon, in the Cascade Mountains of southwestern...
    Resource Type:
    Dissertation
    Full Text:
    , 8- m transects that radiated from the nest center in each of the cardinal directions. Foliage