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  • All fields: biological
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Display: 20

    • Collecting data on a swan nest

    • Collecting data on a swan nest

    • Work of the Service; Yukon Flats National Wildlife Refuge; YFNWR; Wildlife management; Habitat; Lakes; Species; Birds; Waterfowl

    • Biological Technician Kate Soetaert enters nest data of a swan nest at Scoter Camp Lakes.
    • Images
    • Technicians count waterfowl from the shore

    • Technicians count waterfowl from the shore

    • Work of the Service; Wildlife management; Habitat; Lakes; Yukon Flats National Wildlife Refuge; YFNWR; Species; Birds

    • Biological Technicians Scott Freeman and Corey VanStratt count waterfowl using a scope on Scoter Camp Lakes in Yukon Flats NWR.
    • Images
    • Candling scoter egg

    • Candling scoter egg

    • Work of the Service; Wildlife management; Birds; Waterfowl; Employees (USFWS); Personnel; Biologists (USFWS); Research

    • Biological Technician Scott Freeman candles a scoter egg to see at what stage of incubation the nest is during a white-winged scoter breeding ecology study on the Yukon Flats National Wildlife Refuge.
    • Images
    • Scoter Team collects data on scoters

    • Scoter Team collects data on scoters

    • Work of the Service; Wildlife management; Animal Tagging; Bird banding; Yukon Flats National Wildlife Refuge; YFNWR; Species; Birds; Waterfowl

    • Biological Technicians work quickly to measure, weigh, and band a White-winged scoter hen and her ducklings in a scoter breeding ecology study on Yukon Flats NWR.
    • Images
    • The Grand beaver lodge on Scoter Camp Lakes

    • The Grand beaver lodge on Scoter Camp Lakes

    • Work of the Service; Wildlife management; Animal Tagging; Bird banding; Habitat; Lakes; Scenics; Landscapes; Yukon Flats National Wildlife Refuge; YFNWR; Species; Birds; Waterfowl

    • Biological Technicians stand on a large beaver lodge in Scoter Camp Lakes to find strategic locations to set up nets for trapping scoters for tagging.
    • Images
    • Technician weighs a male scoter

    • Technician weighs a male scoter

    • Work of the Service; Employees (USFWS); Wildlife management; Tagging; Bird banding; Birds; Waterfowl; Aquatic environments;

    • Biological Technician Laura Kennedy weighs a white-winged scoter drake during a scoter breeding ecology study at Scoter Camp Lake in the Yukon Flats National Wildlife Refuge.
    • Images
    • Devereux Slough Coastal Wetland Project

    • Devereux Slough Coastal Wetland Project

    • Wetland restoration; Wetlands; Habitat restoration; Coastal environments; Coastal restoration; Coastal zone management;

    • The California Coastal Conservancy was awarded $1 million to help acquire and permanently protect a 63-acre property in Santa Barbara County, California. This project will also result in the restoration of approximately 13 acres of coastal wetlands...
    • Images
    • The “Chief” Goes Fishing on the Mississippi

    • The “Chief” Goes Fishing on the Mississippi

    • refuge centennial; History

    • A moment of quiet reflection on the northern reaches of the Mississippi River, as Bureau of Biological Survey chief Ira Gabrielson (1889-1977) casts a line off a vessel of the Upper Mississippi River National Wildlife and Fish Refuge during a 1937...
    • Images
    • Water Management

    • Water Management

    • History; Wildlife refuges; Water management; Employees (USFWS);

    • Tom Woods, Manager of the refuge, examining water outlet, which supplies fresh water for the refuge. Due to the generosity of Ding Darling, former chief of the former Bureau of Biological Survey, this water oulet was installed.
    • Images
    • Ira Gabrielson at Upper Mississippi River Refuge

    • Ira Gabrielson at Upper Mississippi River Refuge

    • History;refuge centennial;

    • Cigar-chomping Ira Noel Gabrielson (1889-1997), second chief of the Bureau of Biological Survey, studies a report during a 1937 site inspection and Congressional tour of Upper Mississippi River National Wildlife and Fish Refuge. Gabrielson was...
    • Images
    • Robert Hines and Rachel Carson

    • Robert Hines and Rachel Carson

    • History; Biologists (USFWS); Employees (USFWS); History; Marine ecology;

    • National wildlife artist Bob Hines (1912 - 1994) and agency writer and editor Rachel Carson (1907 -1964) spent many hours along the Atlantic coast visiting national wildlife refuges and gathering material for many of the agency’s pamphlets and...
    • Images
    • Grass carp (Triploid)

    • Grass carp (Triploid)

    • Fishes; Fisheries management;

    • Grass carp is an Asian fish species that was imported into the United States in the 1960s. Because many conservationists wanted to reduce human dependencies on use of toxic chemicals, This introduction was considered to be an alternative to...
    • Images
    • Fish and Wildlife Service employee weighing lake sturgeon

    • Fish and Wildlife Service employee weighing lake sturgeon

    • Fisheries management; Fishes; Freshwater fishes;

    • Henry Quinlan, Service Fisheries biologist weighs a lake sturgeon along the Bad River in Wisconsin. This fish species is an important biological component of the Great Lakes fish community. By the early 1900's many populations of lake sturgeon...
    • Images
    • Testing Samples

    • Testing Samples

    • Fish hatcheries; Fisheries management; Fishes; Employees (USFWS); Biologists (USFWS); Work of the Service;

    • Nathan Hyde, a biological technician, prepares a sample of fish food to test in the Nitrogen Analyzer, which reads the percent nitrogen of each sample, which then calculates the protein level by running a multiplication formula.
    • Images
    • National Wildlife Refuge field maintenance

    • National Wildlife Refuge field maintenance

    • Environmental Sciences; Aquatic plants; Biological control; Employees (USFWS); Environmental quality; Equipment; Habitat conservation; Habitat restoration; Maintenance; Wildlife refuges;

    • Disking cattails in wetland area in National Wildlife Refuge to maintain habitat.
    • Images
    • National Wildlife Refuge maintenance

    • National Wildlife Refuge maintenance

    • Biological control; Employees (USFWS); Habitat conservation; Invasive species; Maintenance; Plants; Wildlife refuges;

    • Fish and Wildlife Service employee pulling out Brazilian pepper plants to try to control the exotic invasive.
    • Images
    • Fish and Wildlife Employee Sprays Melaleuca

    • Fish and Wildlife Employee Sprays Melaleuca

    • Biological control; Employees (USFWS); Equipment; Habitat conservation; Habitat restoration; Invasive species; Maintenance; Plants; Refuges; Wildlife refuges;

    • Fish and Wildlife Service employee spraying exotic invasive melaleuca to try to control the exotic invasive. Vertical.
    • Images
    • Fish and Wildlife Service employee showing invasive plant

    • Fish and Wildlife Service employee showing invasive plant

    • Biological control; Employees (USFWS); Environmental quality; Habitat conservation; Habitat restoration; Invasive species; Maintenance; Plants; Refuges; Wildlife refuges;

    • Fish and Wildlife Service employee standing at edge of wetland area being taken over by invasive species water hyacinth and holding two plant specimens to show leaves and root systems. Vertical.
    • Images
    • Fish and Wildlife Service employee eradicating Invasive

    • Fish and Wildlife Service employee eradicating Invasive

    • Biological control; Employees (USFWS); Environmental quality; Equipment; Habitat conservation; Habitat restoration; Invasive species; Maintenance; Plants; Refuges; Wildlife refuges;

    • Fish and Wildlife Service employee with axe, chopping at melaleuca tree trunk in refuge invasive species eradication program.
    • Images
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