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  • All fields: males
(195 results)



Display: 20

    • Mallard ducks in a Wetland

    • animals; aves; Birds; Birds; duck;ducks;Waterfowl; New Jersey
    • Adult male in alternate plumage is unmistakable. Females, immature and eclipse-plumage males could be confused with Black Ducks, Gadwalls and Mottled Ducks, but note the blue speculum with white borders on both sides. Gadwalls are also distinctive...
    • Endangered species coloring book

    • Art; Environmental education; Endangered species; Illustrations;
    • This is a children's coloring book of various endangered species. It provides images of each species for coloring, as well as educational information on the species. The animals included are: Bald Eagle, California red-legged frog Karner Blue...
    • Clay Hardy oral history transcript (conducted by Norman Olson)

    • Biography; Biologists (USFWS); Employees (USFWS); History; Military; Management; Aviation; Work of the Service; Wildlife management; Collaboration; Conservation; Native Americans;
    • Clay Hardy oral history interview as conducted by Norman Olson. Clady Hardy also spent time at Brigantine National Wildlife Refuge, Amchika, and in Anchorage.
    • Larry Salata oral history transcript

    • Biography; Employees (USFWS); Endangered species; Wildfires; Surveying; Military; Waterfowl; Fire management; Game birds; History;
    • Larry Salata oral history narrative.
    • Ave Thayer oral history transcript

    • Biography; Employees (USFWS); History; Hunting; Law enforcement; Trapping; Surveying; Aircraft; Aviation; Mammals; Management; Habitat conservation; Rivers and streams; Wilderness;
    • Ave Thayer oral history interview as conducted by Mark Madison. As well as working at Arctic National Wildlife Refuge and Kenai Moose National Wildlife Refuge, Mr. Thayer also worked in Anchorage under the Alaska Game Commission, and in McGrath,...
    • A talk with Nancy Langston

    • Biological control; Biologists (USFWS); Diseases; Environmental education; Farms and farming; Podcast; Public Lecture;
    • In 1941 the Food and Drug Administration approved the use of diethylstilbestrol (DES), the first synthetic chemical to be marketed as an estrogen and one of the first to be identified as a hormone disruptor—a chemical that mimics hormones. Its...
    • Lead hazards to fish, wildlife, and invertebrates: a synoptic reivew

    • Biologists (USFWS); Water; Fishes; Pollutants;
    • Lead (Pb) and its compounds have been known to man for about 7,000 years, and Pb poisoning has been recognized for at least 2,500 years. All credible evidence indicates that Pb is neither essential nor beneficial to living organisms, and that all...
    • Peregrine Falcon (Falco peregrinus).

    • Birds; Birds of prey;
    • Three subspecies of the peregrine falcon inhabit North America: the American (Falco peregrinus anatum), Arctic (Falco peregrinus tundrius), and Peale’s (Falco peregrinus pealei). Peregrine falcons are roughly crow-sized—about 15 to 21 inches...
    • Peregrine falcon

    • Birds; Birds of prey; Endangered species; Migratory birds; Raptors;
    • This is a fact sheet describing the peregrine falcon in North America. It outlines the history of the bird, its decline in the mid-twentieth century due to DDT, and its successful recovery in the years since.
    • Familiar migratory songbirds

    • Birds; Birdwatching; Migratory birds;
    • This is a booklet that describes various migratory birds that are familiar in the United States. The species covered include the American robin, the American goldfinch, the Ruby-throated hummingbird, the eastern bluebird, the barn swallow, the gray...
    • Red-cockaded woodpecker

    • Birds; Endangered species;
    • This is an in-depth description of the red-cockaded woodpecker. It covers a multitude of topics, including history, location, habitat, environmental niche, conservation efforts and more.
    • Greater sage-grouse (Centrocercus urophasianus)

    • Birds; Endangered species; Threatened species; Relocation; Habitat restoration; Partnerships; Military
    • The greater sage-grouse (Centrocercus urophasianus) was first described by Lewis and Clark in 1805. Its original territory spanned over a dozen states throughout the western region of the United States. Currently, greater sagegrouse occur in...
    • Molt and aging critera for four North American grassland passerines

    • Birds; Grasslands; Migratory birds; Perching birds; Research; Species of concern;
    • This is a description of the molt and aging criteria for four grassland passerines. The species covered are Sprague's Pipit, Grasshopper sparrow, Baird's sparrows, and Chestnut-collared Longspurs. Molt information is important for determining...
    • Cassin's sparrow status assessment and conservation plan

    • Birds; Migratory birds; Monitoring; Perching birds; Research; Statistics; Species of concern; Wildlife management;
    • This is a status assessment and conservation plan for the Cassin's Sparrow. It includes a description and natural history of the bird, as well as range information pertinent to breeding, migration and wintering, monitoring activities, population...

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