Images

Once a grizzly bear is radio collared, biologists can track its movements with telemetry on foot.   

Biologists use a syringe pole to immobilize the captured grizzly bear.  It takes approximately 10 minutes for a bear to become immobilized.  

A biologist prepares to collect biological information from the bear they have captured.  Biologists collect hair samples for genetic analysis, weigh the bear,  and gather numerous measurements of the body, such as the head, paws, claws, teeth, etc.  Overall condition of the bear is assessed as well, including a body fat measurement.

One of the first measurements taken is the bear’s weight using a quadpod and electronic scale. 

A biologist measures a grizzly bear’s head length.

Honey bees play a major role in pollinating the world’s plants, including those we eat regularly. However, land-use changes that decrease flower abundance can affect bee health and pollination services.

Honey bees play a major role in pollinating the world’s plants, including those we eat regularly. However, land-use changes that decrease flower abundance can affect bee health and pollination services.

Honey bees play a major role in pollinating the world’s plants, including those we eat regularly. However, land-use changes that decrease flower abundance can affect bee health and pollination services.

Flock of unidentified birds in water with Mangroves at Merritt Island National Wildlife Refuge.

Pair of Greater White-fronted Geese at Colusa National Wildlife Refuge.

 Lesser Snow Goose at Colusa National Wildlife Refuge.

When looking for a place to set up a capture location, biologists look for existing bear sign such as scratches on trees and bear scat.  Sometimes traps are set in areas that have no obvious bear sign to determine if indeed bears are present.

When looking for a place to set up a capture location, biologists look for existing bear sign such as scratches on trees and bear scat.  Sometimes traps are set in areas that have no obvious bear sign to determine if indeed bears are present.

Flock of Ross’s Geese at Colusa National Wildlife Refuge.

An adult pallid sturgeon, an endangered species.

A recently emerged mayfly collected downstream of the Cinnabar mercury mine site in central Idaho. 

The Hawaiian ‘I‘iwi, a native forest bird species only found in the Hawaiian Islands. 

Experimental laboratory setup to study uranium in aquatic organisms. Bottles contain artificial freshwater amended with dissolved organic matter and a range of uranium concentrations.

Whitefish drying on a fish rack in Pilot Station, AK, in the Yukon River Basin. 

USGS scientist Layne Adams places a radiocollar on a sedated large bull caribou in Denali National Park, Alaska. 

Old-growth ponderosa pine in the Monument Canyon Research Natural Area, New Mexico.