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  • Geoff York, a USGS biologist and Katrina Knott, research assistant, collecting data from a polar bear (Ursus maritimus) on the Beaufort Sea ice. Kaktovik, Alaska.
    D123712.jpg
  • Geoff York a USGS biologist, prepares a radio collar while Katrina Knott, research assistant, painting an ID number on the back of a polar bear. The ID number is to make it easy to see from the air that the bear was captured already. Kaktovik, Alaska
    D123739.jpg
  • Denver Holt of the Owl Research Institute discusses his nearly 30-year long-eared owl research project with a group from the local Audubon chapter in Missoula, Montana.
    D1148699.jpg
  • Denver Holt of the Owl Research Institute discusses his nearly 30-year long-eared owl research project with a group from the local Audubon chapter in Missoula, Montana.
    D1148695.jpg
  • Denver Holt of the Owl Research Institute discusses his nearly 30-year long-eared owl research project with a group from the local Audubon chapter in Missoula, Montana.
    D1148679.jpg
  • Denver Holt of the Owl Research Institute uses a remote camera to check inside the nest cavity of a northern pygmy owl. Polson, Montana
    D00003647-P.jpg
  • Denver Holt and Liberty of the Owl Research Institute banding a  great gray owl. Mission Valley, Montana
    D1680502.jpg
  • Geoff York, USGS biologist and Katrina Knott, research assistant, prepare a polar bear (Ursus maritimus) to start doing their research.  This female bear will receive a radio collar for future tracking.  Kaktovik, Alaska.
    D123700.jpg
  • Geoff York, USGS biologist and Katrina Knott, research assistant, prepare a polar bear (Ursus maritimus) to start doing their research. Kaktovik, Alaska.
    D123661.jpg
  • Geoff York a USGS biologist and Katrina Knott, research assistant,  prepare a polar bear to start doing their research. Kaktovik, Alaska.
    D123506.jpg
  • Katrina Knott, research assistant,  prepare a polar bear (Ursus maritimus) to start doing their research. Kaktovik, Alaska.
    D123679.jpg
  • Denver Holt, biologist for the Owl Research Institute in Charlo, Montana, studying the northern pygmy owl (Glaucidium californicum) in Montana.
    D00007714-P.jpg
  • A polar bear (Ursus maritimus) makes tracks in the snow. These tracks are important for being able to find the bears on the ice for darting and capture for scientific research.
    D125911.jpg
  • Geoff York, USGS biologist, and Katrina Knott, research assistant, collect data from a polar bear (Ursus maritimus) on the Beaufort Sea ice. Kaktovik, Alaska
    D123694.jpg
  • Owl Research Institute banding great gray owl family. Mission Valley, Montana
    D1680684.jpg
  • Denver Holt and the Owl Research Institute field crew make their way into the field for long eared owl trapping near Missoula, Montana.
    D1149185.jpg
  • Toni McNamara and Denver Holt of the Owl Research Institute with a long-eared owl captured for data collection and soon to be released. Missoula, Montana
    D1148723.jpg
  • Supplies used to perform field research on polar bears by the USGS in at their research station in Kaktovik, Alaska.
    D123811.jpg
  • Geoff York, USGS biologist and Katrina Knott, research assistant, prepare a polar bear (Ursus maritimus) to start doing their research. Kaktovik, Alaska.
    D123664.jpg
  • Northern Pygmy Owl (Glaucidium californicum) being prepped for banding. Montana
    D00007849-P.jpg
  • Owl Research Institute banding a great gray owl family. Mission Valley, Montana
    D1680651.jpg
  • Owl Research Institute crew banding short-eared owls chicks. Ninepipe NWR. Charlo, Montana
    D1682032.jpg
  • Dr. Steve Hiro of the Owl Research Institute gently holds a long-eared owl captured for study and soon to be released. Missoula, Montana
    D1148420.jpg
  • Denver Holt checks the inside of a northern pygmy owl nest cavity with a peeper cam. Montana
    D00008101-P.jpg
  • Dr. Steve Amstrup, USGS biologist, and assistant Karyn Rode preparing to collect data from a small female polar bear (Ursus maritimus). Beaufort Sea ice pack, Kaktovik, Alaska
    D125131.jpg
  • Denver Holt of the Owl Research Institute prepares to release a long-eared owl (Asio otus), Missoula, Montana
    D1148733.jpg
  • A polar bear (Ursus maritimus) makes tracks in the snow. These tracks are important for being able to find the bears on the ice for darting and capturing for scientific research.
    D125949.jpg
  • Steve Amstrup , lead USGS biologist, paints a number on the back of an immobilized large male polar bear (Ursus maritimus) that was darted for research purposes. Kaktovik, Alaska.
    D124007.jpg
  • Katrina Knott, a research assistant for the USGS takes weight measurements  of a polar bear (Ursus maritimus) on the Beaufort Sea ice. Kaktovik, Alaska.
    D123773.jpg
  • Geoff York, biologist for USGS, prepares a polar bear to start doing research. Kaktovik, Alaska.
    D123517.jpg
  • Geoff York, USGS biologist, and Katrina Knott, research assistant, prepare a polar bear to start doing their research.
    D123636.jpg
  • Denver Holt and Liberty of the Owl Research Institute banding a great gray owl. Mission Valley, Montana
    D1680562.jpg
  • USGS polar bear team preparing for a day of polar bear research. Kaktovik, Alaska
    D125081.jpg
  • Geoff York, USGS biologist, organizing field gear in the garage of the USGS field research station, with polar bear radio collars sitting on the counter in the foreground. Kaktovik, Alaska
    D123846.jpg
  • Karen Noyce returns a black bear (Ursus americanus) cub to the den after taking data for research. Minnesota
    00471-12819.jpg
  • Geoff York, a USGS biologist, and Katrina Knott, research assistant, collecting data from a polar bear on the Beaufort Sea ice. They use a block and tackle to take weight measurments. Kaktovik, Alaska
    D123732.jpg
  • Denver Holt, biologist for the Owl Research Institute in Charlo, Montana, setting up  using a peeper camera to observe the Northern Pygmy Owl (Glaucidium californicum).
    D00008106.jpg
  • Steve Amstrup. lead biologist for the USGS, leans out of a research helicopter to take aim at a running polar bear to be darted for data collection on the Beaufort sea ice.
    D123896.jpg
  • Geoff York a USGS biologist and Karyn Rode, a research assistant, collecting data from a polar bear (Ursus maritimus) on the Beaufort Sea ice. Kaktovik, Alaska.
    D124441.jpg
  • Geoff York, a USGS biologist and Karyn Rode, a research assistant, collecting data from a polar bear (Ursus maritimus) on the Beaufort Sea ice. Kaktovik, Alaska.
    D124356.jpg
  • Geoff York, a USGS biologist and Karyn Rhode, a research assistant, collecting data from a polar bear (Ursus maritimus) on the Beaufort Sea ice. Kaktovik, Alaska.
    D124352.jpg
  • Steve Amstrup , lead USGS biologist, paints a number on the back of an immobilized large male polar bear (Ursus maritimus) that was darted for research purposes. Kaktovik, Alaska.
    D124005.jpg
  • Steve Amstrup. lead biologist for the USGS leans out of a research helicopter to take aim at a running polar bear to be darted for data collection. Beaufort sea ice in Kaktovik, Alaska.
    D123919.jpg
  • Steve Amstrup. lead biologist for the USGS leans out of a research helicopter to take aim at a running polar bear to be darted for data collection. Beaufort sea ice in Kaktovik, Alaska.
    D123909.jpg
  • Steve Amstrup. lead biologist for the USGS leans out of a research helicopter to take aim at a running polar bear to be darted for data collection. Beaufort sea ice in Kaktovik, Alaska.
    D123895.jpg
  • Steve Amstrup. lead biologist for the USGS leans out of a research helicopter to take aim at a running polar bear to be darted for data collection. Beaufort sea ice in Kaktovik, Alaska.
    D123892.jpg
  • Steve Amstrup. lead biologist for the USGS leans out of a research helicopter to take aim at a running polar bear to be darted for data collection. Beaufort sea ice in Kaktovik, Alaska.
    D123879.jpg
  • Geoff York, USGS biologist organizing field gear in the garage of the field research station in Kaktovik, Alaska.
    D123823.jpg
  • Geoff York, USGS biologist organizing field gear in the garage of the field research station in Kaktovik, Alaska.
    D123820.jpg
  • A female polar bear (Ursus maritimus) newly painted with an identifying number on her back, stands in a groggy, disoriented state having just emerged from an immobilizing drug used by USGS biologists to perform field research. Kaktovik, Alaska.
    D123609.jpg
  • Geoff York, a USGS biologist and Katrina Knott, research assistant,  taking data from a sedated polar bear (Ursus maritimus) in the foreground while another bear sedated earlier slowly get to its feet in the background. Kaktovik, Alaska.
    D123795.jpg
  • Geoff York, a USGS biologist and Katrina Knott, research assistant, taking measurements of a sedated polar bear (Ursus maritimus) on the Beaufort sea ice. Kaktovik, Alaska.
    D123793.jpg
  • Geoff York, a USGS biologist and Katrina Knott, research assistant, taking measurements of a polar bear (Ursus maritimus) they've darted on the Beaufort Sea pack ice. Kaktovik, Alaska.
    D123750.jpg
  • Geoff York, a USGS biologist and Katrina Knott, a research assistant, collecting data from a polar bear (Ursus maritimus) on the Beaufort Sea ice. Kaktovik, Alaska.
    D123723.jpg
  • Tools of the polar bear research trade lie waiting for use on the fur of a polar bear.  Shown here is a calliper, blood viles, measuring tape and syringe needle cover. Kaktovik, Alaska.
    D123547.jpg
  • Geoff York, a USGS biologist and Katrina Knott, a research assistant, collecting data from a polar bear (Ursus maritimus) on the Beaufort Sea ice. Kaktovik, Alaska.
    D123721.jpg
  • Katrina Knott, research assistant for USGS, swabs the inside area between a female polar bears toes. It's thought that female polar bears possibly give off a scent through their feet during estrus. Kaktovik, Alaska.
    D123511.jpg
  • Geoff York, a USGS biologist,  prepares a polar bear (Ursus maritimus) to start doing their research. Kaktovik, Alaska.
    D123670.jpg
  • Katrina Knott , field research assistant, works on preparing blood samples taken from polar bears by USGS biologists. She's working from her field lab at a US Fish & Wildlife Service station in Kaktovik, Alaska.
    D124221.jpg
  • Katrina Knott , field research assistant, works on preparing blood samples taken from polar bears by USGS biologists. She's working from her field lab at a US Fish & Wildlife Service station in Kaktovik, Alaska.
    D124220.jpg
  • A helicopter with biologists from the USGS approach a polar bear (Ursus maritimus) they recently shot with an immobilization drug. He'll soon be down so they can perform their field research and data collection. Kaktovik, Alaska.
    D124152.jpg
  • Geoff York, a USGS biologist and Katrina Knott, research assistant,  taking data from a sedated polar bear (Ursus maritimus) in the foreground while another bear sedated earlier slowly get to its feet in the background. Kaktovik, Alaska.
    D123797.jpg
  • Geoff York, a USGS biologist and Katrina Knott, research assistant, taking measurements of a polar bear (Ursus maritimus) they've darted on the Beaufort Sea pack ice. Kaktovik, Alaska.
    D123751.jpg
  • Geoff York, a USGS biologist,  prepares a polar bear (Ursus maritimus) to start doing their research. Kaktovik, Alaska.
    D123668.jpg
  • Two polar bears are down, having been darted from the air. Geoff York and Katrina Knott prepare the animals to start doing their research. Kaktovik, Alaska.
    D123630.jpg
  • Geoff York a USGS biologist prepares a polar bear (Ursus maritimus) to start doing his research. Kaktovik, Alaska.
    D123681.jpg
  • Dr. Steve Amstrup, USGS biologist, and Doc Gohmert, chopper pilot, prepare to land near an immobilized polar bear (Ursus maritimus). Beaufort Sea ice pack, Kaktovik, Alaska
    D125960.jpg
  • Matt Seidensticker, a biologist from the Owl Research Institute out of Charlo, Montana, studying and recording information on a fledging Northern Hawk Owl (Surnia ulula).
    D000086893.jpg
  • Helicopter being used by Polar Bears International to research and survey Polar Bears(Ursus maritimus) in the Arctic National WIldlife Refuge (ANWR) Alaska, determining their denning range. Daniel J. Cox, wildlife photographer and research biologist, George Durner with the USGS of the Alaska Science Center.
    D00029306.jpg
  • Denver Holt releases a snowy owl (Bubo scandiacus) female with a satellite transmitter.
    00674-08404.jpg
  • A helicopter with biologists from the USGS approach a polar bear they recently shot with an immobilization drug. He'll soon be down so they can perform their field research and data collection.
    D124156.jpg
  • Geoff York, USGS biologist, prepares a radio collar while Katrina Knott, research assistant, paints an ID number on the back of a polar bear. The ID number is to make it easy to see from the air that the bear was captured already.
    D123748.jpg
  • Denver Holt working at his desk at the Owl Research Institute, Nine Pipes NWR. Mission Valley, Montana.
    D1678616.jpg
  • Dr. Steve Amstrup, USGS biologist, takes the skull measurement of a large male polar bear on the ice pack of the Beaufort Sea. A group of biologists lead by Dr. Amstrup, head to the Beaufort Sea pack ice each year to collect data on this region's polar bear population. I spent two weeks helping them with their research and documenting their project. This is part of the Tri-P, Polar Population Project, sponsored in part by Polar Bears International to census Arctic regions for an accurate count of the world's remaining polar bears
    D124909.jpg
  • Merav Ben-David from the University of Wyoming  and project leader of the Polar Sea Icebreaker polar bear research cruise, passes by her two colleagues John Whiteman and Hank Harlow as they collect breath from a polar bear for a breath analysis experiment. Arctic Ocean
    D228737.jpg
  • Matt Seidensticker, a biologist from the Owl Research Institute out of Charlo, Montana. studying and recording information on fledging Northern Hawk Owl.
    D000086963.jpg
  • Steve Amstrup, lead USGS biologist, paints a number on the back of an immobilized large male polar bear that was darted for research purposes. Kaktovik, Alaska
    D124009.jpg
  • Steve Amstrup, lead biologist for the USGS, leans out of a research helicopter to take aim at a running polar bear to be darted for data collection. Beaufort Sea ice, Kaktovik, Alaska
    D123902.jpg
  • Denver Holt releasing a female snowy owl (Bubo scandiacus) with a satellite transmitter. Barrow, Alaska
    00674-08313.jpg
  • Denver Holt holding a female snowy owl (Bubo scandiacus). Barrow, Alaska
    00674-10214.jpg
  • Denver Holt, biologist for the Owl Research Institute from Charlo, Montana, and assistant viewing Northern Pygmy Owl (Glaucidium californicum) using a peeper camera.
    D00003646.jpg
  • Denver Holt, biologist for the Owl Research Institute in Charlo, Montana, looking for the Northern Pygmy Owl (Glaucidium gnoma) in forest of northen Montana.
    D00007961.jpg
  • Denver Holt, biologist for the Owl Research Institute in Charlo, Montana, studying the Northern Pygmy Owl (Glaucidium gnoma) Montana.
    D00007850.jpg
  • Denver Holt, biologist for the Owl Research Institute in Charlo, Montana, capturing adult Northern Pygmy Owl (Glaucidium gnoma) in fish net. Montana.
    D00007670.jpg
  • Denver Holt, biologist for the Owl Research Institute in Charlo, Montana, capturing adult Northern Pygmy Owl (Glaucidium gnoma) in fish net. Montana.
    D00007667.jpg
  • Denver Holt, biologist for the Owl Research Institute in Charlo, Montana, capturing adult Northern Pygmy Owl (Glaucidium gnoma) in fish net. Montana.
    D00007663.jpg
  • Denver Holt of the Owl Research Institute in Charlo, Montana, researching the Northern Pygmy Owl (Glaucidium gnoma) in northern Montana. Spring.
    D00021978.jpg
  • Denver Holt of the Owl Research Institute in Charlo, Montana, researching the Northern Pygmy Owl (Glaucidium gnoma) in northern Montana. Spring.
    D00021967.jpg
  • Denver Holt of the Owl Research Institute in Charlo, Montana, researching the Northern Pygmy Owl (Glaucidium gnoma) in northern Montana. Spring.
    D00021966.jpg
  • Denver Holt, biologist for the Owl Research Institute in Charlo, Montana, studying the Northern Pygmy Owl (Glaucidium gnoma) Montana.
    D00007860.jpg
  • Denver Holt, biologist for the Owl Research Institute in Charlo, Montana, studying the Northern Pygmy Owl (Glaucidium gnoma) Montana.
    D00007855.jpg
  • Denver Holt, biologist for the Owl Research Institute in Charlo, Montana, studying the Northern Pygmy Owl (Glaucidium gnoma) Montana, as property owner, Bill Bennington holds adult.
    D00007725.jpg
  • Snowy Owl, (Nyctea scandiaca) Denver Holt in research office. Barrow, Alaska.
    00674-05501.jpg
  • Denver Holt, biologist for the Owl Research Institute in Charlo, Montana, studying the Northern Pygmy Owl (Glaucidium gnoma) Montana, as property owner, Bill Bennington holds adult.
    D00007716.jpg
  • Denver Holt and Laura Phillips with a captured female snowy owl (Bubo scandiacus). Barrow, Alaska
    00674-10207.jpg
  • Environmental Education - Denver Holt, Director of The Owl Research Institute of Charlo, Montana.
    D00037402.jpg
  • Denver Holt, biologist for the Owl Research Institute in Charlo, Montana, studying the Northern Pygmy Owl (Glaucidium gnoma) Montana.
    D00007745.jpg
  • Denver Holt, a biologist with the Owl Research Institue in Charlo, Montana, and assistant setting up mist net to capture Northen Pygmy Owl (Glaucidium californicum) Montana.
    D00005134.jpg
  • Denver Holt of the Owl Research Institute in Charlo, Montana, researching the Northern Pygmy Owl (Glaucidium gnoma) in northern Montana. Spring.
    D00021976.jpg
  • Denver Holt, biologist for the Owl Research Institute in Charlo, Montana, studying the Northern Pygmy Owl (Glaucidium gnoma) Montana.
    D00007738.jpg
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