Yellow bellied flycatcher in the Presidential Range, White Mountains, NH
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Yellow bellied flycatcher
Yellow bellied flycatcher in the Presidential Range, White Mountains, NH
Hatched Embryo (Larvae) of Pallid Sturgeon
A hatched embryo of a pallid sturgeon.
A hatched embryo of a pallid sturgeon.
Transition Zone Between Dams on the Upper Missouri River
The transition zone between the Missouri River and Ft. Peck Reservoir.
The transition zone between the Missouri River and Ft. Peck Reservoir.
Light Meter near Mangrove Corals
Underwater light sensor deployed under the mangrove canopy where corals are growing.
Underwater light sensor deployed under the mangrove canopy where corals are growing.
American Bullfrog
A biologist examines an American bullfrog along the Yellowstone River near Billings, MT.
A biologist examines an American bullfrog along the Yellowstone River near Billings, MT.
Ornamented Bivalve Mollusk
Bivalve mollusk with a highly-ornamented shell. (Scanned From Negative)
Bivalve mollusk with a highly-ornamented shell. (Scanned From Negative)
Studying Marsh Subsidence
National Wetlands Research Center workers set bench marks to study marsh subsidence.
National Wetlands Research Center workers set bench marks to study marsh subsidence.
Spiraxis sp.
Spiraxis sp. shell viewed with a scanning electron microscope with aperture facing up.
Spiraxis sp. shell viewed with a scanning electron microscope with aperture facing up.
Spiraxis sp.
Spiraxis sp. shell viewed with a scanning electron microscope with aperture facing up.
Spiraxis sp. shell viewed with a scanning electron microscope with aperture facing up.
Median Striate Snail (Striatura meridionalis)
Striatura meridionalis shell viewed with a scanning electron microscope.
Striatura meridionalis shell viewed with a scanning electron microscope.
Electrofishing Boat
Marc Blouin, NBS Research Biologist, uses an electrofishing boat to obtain information on fish populations in the Black River in Lorain, Ohio.
Marc Blouin, NBS Research Biologist, uses an electrofishing boat to obtain information on fish populations in the Black River in Lorain, Ohio.
Mallard (Anas platyrhynchos)
Removal of esophageal contents from a 2-week old mallard duckling.
Removal of esophageal contents from a 2-week old mallard duckling.
Placing Invertebrate Traps in a Pond
Graduate student Christiane Roy placing suspended invertebrate traps in the experimental ponds by kayak.
Graduate student Christiane Roy placing suspended invertebrate traps in the experimental ponds by kayak.
Lethal Injection of a Mallard Duckling
Graduate student Christiane Roy taking a mallard duckling by lethal injection.
Graduate student Christiane Roy taking a mallard duckling by lethal injection.
Snow Geese (Chen caerulescens)
Snow geese captured on Wrangel Island, Russia in July of 1991 and 1992. The project involved using satellite transmitters to track the migration of the geese.
Snow geese captured on Wrangel Island, Russia in July of 1991 and 1992. The project involved using satellite transmitters to track the migration of the geese.
Chanomphalus pilsbryi
Bottom view of Chanomphalus pilsbryi shell viewed with a scanning electron microscope.
Bottom view of Chanomphalus pilsbryi shell viewed with a scanning electron microscope.
Chanomphalus pilsbryi
Chanomphalus pilsbryi shell viewed with a scanning electron microscope.
Chanomphalus pilsbryi shell viewed with a scanning electron microscope.
Comb Snaggletooth Snail (Gastrocopta pentodon)
Gastrocopta pentodon shell viewed with a scanning electron microscope with a zoom-in of the aperture.
Gastrocopta pentodon shell viewed with a scanning electron microscope with a zoom-in of the aperture.
Brine Pit
Brine pit in Sheridan County, Montana.
Prairie Pothole Region
Prairie Pothole Region landscape showing high wetland density.
Prairie Pothole Region landscape showing high wetland density.