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  • All fields: Winter
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Display: 20

    • Glacial Zone of Ablation in the Alaska Range

    • Aerial photography photography;Physical Geography; Scenics; Landscapes; Glaciers; Alaska
    • The zone of ablation occurs where summer loss of snow exceeds winter accumulation on a glacier surface. Aerial view of glacier.
    • Noatak River Island

    • Aerial photography; Scenics; Rivers and streams;
    • Aerial view of Noatak River Island in the Winter.
    • Patuxent Science Symposium, 75th Anniversary oral history transcript Part 1 of 4

    • Agriculture; Bird banding; Birds; Biologists (USFWS); Biography; Diseases; Employees (USFWS); Fishes; History; Migration; Migratory birds; Pesticides; Research; Science; Scientific personnel (USFWS); Surveying; Tagging; Waterfowl; Wildlife...
    • This is Part 1 of 4 transcripts from the Patuxent Science Symposium, 75th Anniversary of the Patuxent Science Center. It includes speakers who talk about their time at working at Patuxent and some of the work they did. This transcript includes the...
    • Patuxent Science Symposium, 75th Anniversary oral history transcript Part 3 of 4

    • Agriculture; Bird banding; Birds; Biologists (USFWS); Biography; Diseases; Employees (USFWS); Fishes; History; Migration; Migratory birds; Pesticides; Research; Science; Scientific personnel (USFWS); Surveying; Tagging; Waterfowl; Wildlife...
    • This is Part 3 of 4 transcripts from the Patuxent Science Symposium, 75th Anniversary of the Patuxent Science Center. It includes speakers who talk about their time at working at Patuxent and some of the work they did. This transcript includes the...
    • Patuxent Science Symposium, 75th Anniversary oral history transcript Part 2 of 4

    • Agriculture; Bird banding; Birds; Biologists (USFWS); Biography; Diseases; Employees (USFWS); Fishes; History; Migration; Migratory birds; Pesticides; Research; Science; Scientific personnel (USFWS); Surveying; Tagging; Waterfowl; Wildlife...
    • This is Part 2 of 4 transcripts from the Patuxent Science Symposium, 75th Anniversary of the Patuxent Science Center. It includes speakers who talk about their time at working at Patuxent and some of the work they did. This transcript includes the...
    • Shemya island Cable Bowl N shore

    • ALASKA MARITIME NATIONAL WILDLIFE REFUGE; AMNWR; Birds; birding; Marine birds; habitat; Coastal environments; biology; Aleutian Islands; Aleutians; winter; Snow
    • February 2000
    • Shemya Island Cable Bowl View west

    • ALASKA MARITIME NATIONAL WILDLIFE REFUGE; AMNWR; habitat; Coastal environments; biology; Aleutian Islands; Aleutians; Snow; winter
    • January 2000
    • Wyoming toads and cattle: at home on the range

    • Aquatic animals; Biologists (USFWS); Extinctions; Endangered and/or threatened; Amphibians;
    • Biologists feared that the Wyoming toad was extinct until 1987 when a fisherman discovered a population at Mortenson Lake on Swanson’s land. The discovery created excitement about a chance to save the species and its habitat, and it led Swanson...
    • Flock of Snow Geese on the refuge

    • Aquatic birds; Aquatic environments; Birds; Scenics; Wildlife refuges; Migratory birds;
    • Because of its position on the Atlantic Flyway, Chincoteague National Wildlife Refuge is an ideal place for birds to rest, feed, nest, or winter.
    • Flight of the Snow Geese

    • Aquatic birds; Aquatic environments; Birds; Scenics; Wildlife refuges; Migratory birds;
    • Because of its position on the Atlantic Flyway, Chincoteague National Wildlife Refuge is an ideal place for birds to rest, feed, nest, or winter.
    • Snow Goose in flight

    • Aquatic birds; Aquatic environments; Birds; Scenics; Wildlife refuges; Migratory birds;
    • Because of its position on the Atlantic Flyway, Chincoteague National Wildlife Refuge is an ideal place for birds to rest, feed, nest, or winter.
    • Migratory flock of Snow Geese

    • Aquatic birds; Aquatic environments; Birds; Scenics; Wildlife refuges; Migratory birds;
    • Because of its position on the Atlantic Flyway, Chincoteague National Wildlife Refuge is an ideal place for birds to rest, feed, nest, or winter.
    • Habitat suitability index models: Gadwall (breeding)

    • Aquatic birds; Biological control; Habitat conservation; Migratory birds; Wetlands;
    • The basis for this HSI model was developed in a workshop that included the following waterfowl biologists form the Northern Prairie Wildlife Research Center, Jamestown, ND: Leo Kirsch (retired), John Lokemoen, and George Swanson. These individuals...
    • Status of the double-crested cormorant (phalacrocorax auritus) in North America

    • Aquatic birds; Birds; Endangered and/or threatened; Migratory birds; Monitoring; Research; Statistics; Waterfowl;
    • This is a status assessment of the double-crested cormorant in North America as of 2001. It includes general information on the bird, biological information and area-specific population information for throughout North America.

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