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Display: 20

    • A guide to nestling development and aging in altricial passerines

    • Birds; Perching birds; Research; Statistics;
    • This is a guide to altricial passerines. It has an explanation of variables used for aging birds and an explanation of methodology employed, and provides information obtained while recording the early aging of the Dusky Flycatcher, the Carolina...
    • Explore the world with shorebirds

    • Birds; Shorebirds;
    • A multidisciplinary education guide for grades 2-12 (with sections on "How to Adapt" for Preschool - 1st grade, home schools, youth groups, and nature centers)
    • Colorado hookless Cactus

    • Plants; Threatened species;
    • The Colorado hookless cactus is a barrel shaped cactus that ranges from 1.2 to 4.8 inches (in.) (3 to 12 centimeters (cm)) tall, with exceptional plants up to 12 in. (30 cm) tall. Stems range from 1.6 to 3.6 in. (4 to 9 cm) in diameter. The stems...
    • Colorado hookless Cactus

    • Plants; Threatened species;
    • The Colorado hookless cactus is a barrel shaped cactus that ranges from 1.2 to 4.8 inches (in.) (3 to 12 centimeters (cm)) tall, with exceptional plants up to 12 in. (30 cm) tall. Stems range from 1.6 to 3.6 in. (4 to 9 cm) in diameter. The stems...
    • Survey Methods for Frog Abnormalities on National Wildlife Refuges

    • Videography;Environmental Education;aquatic animals;wildlife conservation;education;amphibians; Wildlife management;
    • This training video is designed for technicians and biologists who are sampling wetlands to determine the percentage of abnormal-appearing frogs, primarily at USFWS National Wildlife Refuges. The purpose of this video is to show the proper survey...
    • Fishes of the Middle West.

    • History; Fishes; Fisheries management; Employees (USFWS); Biologists (USFWS); Commercial fishing; Aquatic environments;
    • Original format booklet
    • Walter Clark and Dave Hall oral history transcript

    • History; Biography; Birds; Game birds; Hunting; Wilderness; Employees (USFWS); Directors (USFWS)
    • Oral history interview with Walter Clark and Dave Hall. The two men are talking and getting into an automobile. Doors shutting, engine ignition sounds are heard
    • Black toad

    • Amphibians;
    • The toad's black skin is covered in white and tan speckles and it sports a white midline down its spine from head to rump. Adults are approximately 5 cm (2 inches) in length. They are active during the warmer months and overwinter underground near...
    • Alaska's Living Legacy:  The National Wildlife Refuges of Alaska

    • videography; U.S. Fish and Wildlife Service; wildlife refuges; wildlife conservation
    • The Alaska Peninsula and Becharof National Wildlife Refuges are lands of spectacular beauty, with rolling tundra, braided rivers, glacial lakes, towering mountains, active volcanoes, rugged sea cliffs and pristine coastlines. Dominated by massive...

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