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Pacific Chorus Frog
A Pacific chorus frog (Pseudacris regilla) in a meadow located in Lassen Volcanic National Park....
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Pacific Chorus Frog
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Location: Lassen Volcanic National Park, CA, USA
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Pacific Chorus Frog
A Pacific chorus frog (Pseudacris regilla) in a meadow located in Point Reyes National Seashore....
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Pacific Chorus Frog
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Location: Point Reyes National Seashore, CA, USA
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Pacific Chorus Frog
A Pacific Chorus frog (Pseudacris regilla) in a meadow located in Yosemite National Park....
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Pacific Chorus Frog
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Location: Yosemite National Park, CA, USA
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California Red-legged Frog
California red-legged frog (Rana draytonii) surfaces in a pond in Point Reyes National Seashore, CA....
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California Red-legged Frog
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Location: Point Reyes National Seashore, CA, USA
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Green Tree Frog
This green tree frog (Hyla cinerea) sits on the lip of a pitcher plant in a bog in Alabama. The frog was down in the pitcher plant, but moved up to rest on its edge as the photographer approached....
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Green Tree Frog
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Location: Cherokee County, AL, USA
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USGS Scientist Conducting Amphibian Research
Dr. Erin Muths (ARMI scientist, USGS) sampling frogs at a field site on Mt. Evans, Colorado....
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USGS Scientist Conducting Amphibian Research
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Location: Mt. Evans, CO, USA
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Sierra Nevada Yellow-Legged Frog
A Sierra Nevada yellow-legged frog (Rana sierrae) scans the landscape in Yosemite National Park....
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Sierra Nevada Yellow-Legged Frog
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Location: Yosemite National Park, CA, USA
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Frog
Frog found by Dazey waterway site 3....
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Frog
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Location: Dazey, ND, USA
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An Endangered Yellow-Legged Frog
USGS biologists are leading the monitoring and reintroduction effort of the Southern California mountain yellow-legged frog -- federally listed as endangered with only 200 wild adults remaining in the mountains surrounding Los Angeles County....
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An Endangered Yellow-Legged Frog
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Location: CA, USA
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Frog in Hiding
Frog in hiding along the Sheyenne River southeast of Maddock, North Dakota.  Photograph taken during a bioassessment of the area....
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Frog in Hiding
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Location: Maddock, ND, USA
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Ornate Horned Frog
Ornate Horned Frogs are commonly found in parts of South America and are from the Ceratophryidae family....
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Ornate Horned Frog
Ornate Horned Frogs are commonly found in parts of South America and are from the Ceratophryidae family....
Location: Washington, DC, USA
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Ambushed by a Dart Poison Frog
Dart Poison Frogs are commonly found in Central and South America and are from the Dendrobatidae family....
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Ambushed by a Dart Poison Frog
Dart Poison Frogs are commonly found in Central and South America and are from the Dendrobatidae family....
Location: USA
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Juvenile Mountain Yellow-legged Frog
Juvenile mountain yellow-legged frog in San Bernardino County, California. ...
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Juvenile Mountain Yellow-legged Frog
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Location: CA, USA
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Releasing Endangered Tadpoles into Stream
USGS scientist, Adam Backlins, prepares to make the first-ever release of endangered mountain yellow-legged frog tadpoles into a mountain stream....
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Releasing Endangered Tadpoles into Stream
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Location: CA, USA
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Gray Treefrog
Still relatively common in Louisiana, although amphibian declines are a global problem...
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Gray Treefrog
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Location: Baton Rouge, LA, USA
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Bronze Frog
Common in Louisiana, although amphibian declines are a global problem. Are we next?...
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Bronze Frog
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Location: Baton Rouge , LA, USA
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Squirrel Treefrog in Florida
A native squirrel treefrog in Florida....
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Squirrel Treefrog in Florida
A native squirrel treefrog in Florida....
Location: USA
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A Green Treefrog in Florida
A native green treefrog in Florida....
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A Green Treefrog in Florida
A native green treefrog in Florida....
Location: USA
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Sampling Stream Water in Denali National Park, Alaska
Ed Pfeifer of the USGS Southwest Geographic Science Team collecting water samples during field work for a study of Dall sheep habitat in Denali National Park, Alaska....
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Sampling Stream Water in Denali National Park, Alaska
Ed Pfeifer of the USGS Southwest Geographic Science Team collecting water samples during field work for a study of Dall sheep habitat in Denali National Park, Alaska....
Location: Denali National Park, AK, USA
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Frog in the Woods
Frog in the woods in Shenandoah National Park, Virginia....
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Frog in the Woods
Frog in the woods in Shenandoah National Park, Virginia....
Location: VA, USA
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Page Last Modified: Wednesday, January 09, 2013