USGS biologist Paul Cryan releases a bat carrying a miniature radio transmitter. Researchers are increasingly turning to high-tech methods to try to learn more about the mysterious lives of bats.
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Bat with Radio Transmitter
USGS biologist Paul Cryan releases a bat carrying a miniature radio transmitter. Researchers are increasingly turning to high-tech methods to try to learn more about the mysterious lives of bats.
Bats and Wind Energy
USGS biologist Paul Cryan examines the carcass of a hoary bat (Lasiurus cinereus) found beneath a wind turbine. By examining the casualties, biologists hope to learn more about why migratory bats are so susceptible to wind turbines.
USGS biologist Paul Cryan examines the carcass of a hoary bat (Lasiurus cinereus) found beneath a wind turbine. By examining the casualties, biologists hope to learn more about why migratory bats are so susceptible to wind turbines.
Beni Anaconda (Eunectes beniensis)
Beni or Bolivian Anaconda (Eunectes beniensis). Photo by Lutz Dirksen, www.anakondas.de. Used with permission.
Beni or Bolivian Anaconda (Eunectes beniensis). Photo by Lutz Dirksen, www.anakondas.de. Used with permission.
Southern African Python
Southern African Python (Python natalensis). The snake pictured is a representative of a species discussed in the USGS snake risk assessment. This snake was photographed in its native range.
Southern African Python (Python natalensis). The snake pictured is a representative of a species discussed in the USGS snake risk assessment. This snake was photographed in its native range.
Dave Mech Following Wolves
Late in the evening, two wolves make use of the trail that leads to the head of the fiord. Studying wolves in the High Arctic allows scientists to follow the wolves during their travels, assuming the scientists can keep up. All-terrain vehicles are needed, and the 24-hour daylight at this time of year is critical.
Late in the evening, two wolves make use of the trail that leads to the head of the fiord. Studying wolves in the High Arctic allows scientists to follow the wolves during their travels, assuming the scientists can keep up. All-terrain vehicles are needed, and the 24-hour daylight at this time of year is critical.
Brutus the North Pole Wolf
USGS biologist Dave Mech has spent more than 20 summers studying Arctic wolves on Ellesmere Island, where they are unafraid of humans and can be observed at close range.
USGS biologist Dave Mech has spent more than 20 summers studying Arctic wolves on Ellesmere Island, where they are unafraid of humans and can be observed at close range.
Purple Loosestrife
Many species of birds rely on wetlands such as this baldcypress swamp, one of the ecosystems currently being studied by scientists at the USGS NWRC.
Many species of birds rely on wetlands such as this baldcypress swamp, one of the ecosystems currently being studied by scientists at the USGS NWRC.
Massachusetts inner continental shelf
Massachusetts inner continental shelf bottom photograph showing seafloor life.
Massachusetts inner continental shelf bottom photograph showing seafloor life.
Bear Digging for Food
Bear digging for food in Shenandoah National Park, Virginia.
Bear digging for food in Shenandoah National Park, Virginia.
Bison Cow and Calf
A bison cow and her calf.
A bison cow and her calf.
Bison in Winter
A plains bison in winter at Yellowstone National Park. A bison's hump is useful as a snowplow in winter when the animal swings its head from side to side to brush aside the snow to reach food underneath. The hump is composed of muscles supported by long vertebrae.
A plains bison in winter at Yellowstone National Park. A bison's hump is useful as a snowplow in winter when the animal swings its head from side to side to brush aside the snow to reach food underneath. The hump is composed of muscles supported by long vertebrae.
Blue Herons
Little blue heron siblings.
Elk in Northwestern Wyoming
Elk congregate on the Camp Creek Feed Ground in northwestern Wyoming.
Elk congregate on the Camp Creek Feed Ground in northwestern Wyoming.
Bighead Carp
Bighead carp are a large and troublesome invasive species from Asia found in the great rivers of the central United States.
Bighead carp are a large and troublesome invasive species from Asia found in the great rivers of the central United States.
A Net Full of Mostly Bighead Carp
Bighead carp are a large and troublesome invasive species from Asia found in the great rivers of the central United States.
Bighead carp are a large and troublesome invasive species from Asia found in the great rivers of the central United States.
Whimbrel
In general, Whimbrels (like the one in this photo) are brown and grey in appearance in contrast to the brown and cinnamon tones of curlews. In addition, these two species can always be distinguished by their vocalizations.
In general, Whimbrels (like the one in this photo) are brown and grey in appearance in contrast to the brown and cinnamon tones of curlews. In addition, these two species can always be distinguished by their vocalizations.
Endangered Devils Hole Pupfish
A group of Devils Hole pupfish forage along the edge of the shallow spawning shelf in Devils Hole.
A group of Devils Hole pupfish forage along the edge of the shallow spawning shelf in Devils Hole.
USGS Researcher Monitoring Endangered Pupfish
USGS Cooperative Research Unit graduate student Ambre Chaudoin monitors pupfish spawning behavior in Devils Hole, the only habitat for endangered Devils Hole pupfish.
USGS Cooperative Research Unit graduate student Ambre Chaudoin monitors pupfish spawning behavior in Devils Hole, the only habitat for endangered Devils Hole pupfish.
Ambushed by a Dart Poison Frog
Dart Poison Frogs are commonly found in Central and South America and are from the Dendrobatidae family.
Dart Poison Frogs are commonly found in Central and South America and are from the Dendrobatidae family.
Dead Ponderosas in Jemez, N.M.
Drought and climate change are causing extensive forest dieback in the U.S. West as well as worldwide. These photos show dead ponderosa pines in the Jemez Mountains of New Mexico killed by a combination of drought stress and attacks by bark beetles on weakened trees.
Drought and climate change are causing extensive forest dieback in the U.S. West as well as worldwide. These photos show dead ponderosa pines in the Jemez Mountains of New Mexico killed by a combination of drought stress and attacks by bark beetles on weakened trees.
Ultrasound of Pallid Sturgeon
An ultrasound is used to determine the reproductive condition of female pallid sturgeon.
An ultrasound is used to determine the reproductive condition of female pallid sturgeon.