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  • All fields: airspace
(6 results)



Display: 20

    • Bill Butler oral history transcript

    • Biography; Biologists (USFWS); Aircraft; Aviation; Employees (USFWS); History; Military; Migratory birds; Management; Surveying; Waterfowl;
    • Bill Butler oral history interview as conducted by Mark Madison. After leaving Alaska, Bill went to Washington D.C. as the aviation manager for the Fish and Wildlife Service.
    • California condor (Gymnogyps californianus) recovery plan. Third revision.

    • Endangered and/or threatened; Birds; Birds of prey; Captive breeding; Reintroduction; Raptors;
    • 1976, (41 FR 187). Long recognized as a vanishing species (Cooper 1890, Koford 1953, Wilbur 1978), the California condor remains one ofthe world’s rarest and most imperiled vertebrate species. Despite intensive conservation...
    • Thomas Duncan oral history transcript

    • History; Biography; Biologists (USFWS); Employees (USFWS); Wilderness; Wildlife management; Wildlife refuges; Work of the Service;
    • Oral history interview with Thomas Duncan with Mark Madison as interviewer.

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