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Filtering by: Alternative title ssim Resource atlas : natural, human, economic, public : Polk County, Oregon Remove constraint Alternative title ssim: Resource atlas : natural, human, economic, public : Polk County, Oregon Contributor Hagar, Joan C. Remove constraint Contributor: Hagar, Joan C. Degree Level Master's Remove constraint Degree Level: Master's

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  • Habitat Associations and Diet Composition of Western Purple Martins in Western Oregon

    Creator:
    Sherman, Lorelle M.
    Abstract:
    The western purple martin (Progne subis arboricola) is a species of conservation concern throughout the Pacific Northwest. In western Oregon, the purple martin nests in three major ecosystem types: inland open-water, coastal, and upland forest. The availability of suitable breeding habitat is a major limiting factor for western purple martin...
    Resource Type:
    Masters Thesis
    Full Text:
    martins breeding in natural cavities. Horvath (1999) surveyed purple martins throughout Oregon and