A biologist examines an American bullfrog along the Yellowstone River near Billings, MT.
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American Bullfrog
A biologist examines an American bullfrog along the Yellowstone River near Billings, MT.
Piping Plover
An adult piping plover. The piping plover is a small migratory shorebird listed as endangered in Canada and the U.S. Great Lakes, and threatened throughout the remainder of its U.S. breeding and winter range. Recent surveys indicate that there are only about 8,000 adults in existence.
An adult piping plover. The piping plover is a small migratory shorebird listed as endangered in Canada and the U.S. Great Lakes, and threatened throughout the remainder of its U.S. breeding and winter range. Recent surveys indicate that there are only about 8,000 adults in existence.
Amakihi Honeycreeper
During the past decade populations of this honeycreeper have begun to rebound at lower elevations on most of the main Hawaiian Islands, in spite of high prevalence of infection with avian malaria.
During the past decade populations of this honeycreeper have begun to rebound at lower elevations on most of the main Hawaiian Islands, in spite of high prevalence of infection with avian malaria.
Louisiana Black Bear and Cubs
A threatened Louisiana black bear and her cubs up in a tree.
A threatened Louisiana black bear and her cubs up in a tree.
USGS scientists test osprey chicks’ blood to test effects of toxic chemicals
USGS researcher Rebecca Lazarus prepares to take a blood sample from an osprey fledgling in a nest on the Chesapeake and Delaware Canal, Delaware Bay in 2015. Lazarus and colleagues did similar sampling of 48 chicks on Chesapeake Bay in 2011-2013.
USGS researcher Rebecca Lazarus prepares to take a blood sample from an osprey fledgling in a nest on the Chesapeake and Delaware Canal, Delaware Bay in 2015. Lazarus and colleagues did similar sampling of 48 chicks on Chesapeake Bay in 2011-2013.
Eskimo Volunteers Helping with Banding
Two Yupik Eskimo students from Chevak, Alaska holding a tundra swan cygnet. These student volunteers were helping with an annual USGS waterfowl banding program along the Kashunuk River near the Bering Sea coast in western Alaska.
Two Yupik Eskimo students from Chevak, Alaska holding a tundra swan cygnet. These student volunteers were helping with an annual USGS waterfowl banding program along the Kashunuk River near the Bering Sea coast in western Alaska.
Northern Pintail Duck
A male northern pintail duck.
A male northern pintail duck.
Using a Microscope to Identify Larval Fish
Amy George uses a microscope and imaging software to measure larval Acipenseriformes collected in the Missouri River.
Amy George uses a microscope and imaging software to measure larval Acipenseriformes collected in the Missouri River.
Saguaro Cactus
Arizona saquaro will be one of the species looked at by USA-NPN volunteers.
Arizona saquaro will be one of the species looked at by USA-NPN volunteers.
Smallmouth Bass
A curious smallmouth bass following behind scuba divers in Sparkling Lake, Vilas County, Wis.
A curious smallmouth bass following behind scuba divers in Sparkling Lake, Vilas County, Wis.
Invasive Lionfish Removal
The invasive red lionfish (Pterois volitans) waits to be hauled to the surface, where it will eventually be used by NOAA to conduct lab studies on lionfish reproductive biology, age, and growth.
The invasive red lionfish (Pterois volitans) waits to be hauled to the surface, where it will eventually be used by NOAA to conduct lab studies on lionfish reproductive biology, age, and growth.
Honey Bees Make Life Sweet
Honey bees live and work in highly collaborative, social colonies with a sole reproducing queen, and they make honey by storing nectar from flowering plants in their hives for use during food scarcities.
Honey bees live and work in highly collaborative, social colonies with a sole reproducing queen, and they make honey by storing nectar from flowering plants in their hives for use during food scarcities.
Burmese python, a Giant Constrictor Snake
Burmese python (Python molurus). Photo courtesy of Roy Wood, National Park Service.
Burmese python (Python molurus). Photo courtesy of Roy Wood, National Park Service.
Lake Michigan Sand Waves
Calm Lake Michigan morning while sampling dead and dying fish for viral hemorrhagic septicemia virus (VHSV). This virus has recently emerged in the Great Lakes and caused severe epidemics in many fish species.
Calm Lake Michigan morning while sampling dead and dying fish for viral hemorrhagic septicemia virus (VHSV). This virus has recently emerged in the Great Lakes and caused severe epidemics in many fish species.
Two Cladonia Lichen Species Among Blueberry Plants
Two Cladonia lichen species, C. stellaris and C. rangiferina are pictured here among some blueberry plants in Newfoundland. Lichens -- which are often mistaken for moss -- are unusual plant-like organisms that are actually symbioses of fungi, algae and bacteria living together.
Two Cladonia lichen species, C. stellaris and C. rangiferina are pictured here among some blueberry plants in Newfoundland. Lichens -- which are often mistaken for moss -- are unusual plant-like organisms that are actually symbioses of fungi, algae and bacteria living together.
Prairie Pothole Region
Prairie Pothole Region landscape showing high wetland density.
Prairie Pothole Region landscape showing high wetland density.
Flat Cays, U.S. Virgin Islands Coral Reef
Shallow coral reefs in the U.S. Virgin Islands are in jeopardy due to climate warming and ocean acidification.
Shallow coral reefs in the U.S. Virgin Islands are in jeopardy due to climate warming and ocean acidification.
Geyser Valley, Olympic National Park
Picture of Geyser Valley in Olympic National Park in Northwest Washington.
Picture of Geyser Valley in Olympic National Park in Northwest Washington.
Bird Migration Card - 1937
Image scan of a historical bird migration card.
Image scan of a historical bird migration card.
Bird Migration Card - 1933
Image scan of a historical bird migration card.
Image scan of a historical bird migration card.
Bird Migration Card - 1922
Image scan of a historical bird migration card.
Image scan of a historical bird migration card.