4,179 Free Images of Threatening

endangered and/or threatened species wildlife refuge biologists(usfws)work of the service fish animals wildlife wildlife viewing fish hatcheries water

Columbian white-tailed Deer on Tenasillahe Island

Juvenile Chinook salmon-3

Juvenile Gopher tortise feeding

reptiles animals

Pallid Sturgeon-1

Biologists search for Fountain Darter-4

Biologists search for Fountain Darter-3

Anglers release a salmon-3

recreational fish

Pallid sturgeon-1

conservation fish

Masked bobwhite quail

Hatchling Gopher tortoises sharing a burrow

reptiles georgia

Wood stork-2

Wyoming toad-3

reptiles animals

Biologists weigh a Gulf sturgeon in river-3

Staff monitoring endangered plant species site in Southern California

Hellbender in hand

north carolina amphibian

Red wolf-4

Biologists weigh a Gulf sturgeon in river-5

clay-loving wild buckwheat-2

Biologists measure a Gulf sturgeon in river-1

Pallid sturgeon-1

conservation fish

Chinook salmon migrating-1

Biologists weigh a Gulf sturgeon in river-2

Juvenile pallid sturgeon

conservation fish

Biologists search for Fountain Darter-1

Black-footed Ferret

wildlife animals

Atlantic sturgeon-3

Indiana bat

landscape water

Biologists dip net Gila trout out of tank into buckets

partnership new mexico

Pitcher's thistle

Ash Meadows Amargosa pupfish-1

Captive Devils Hole pupfish-5

Delmarva Peninsula fox squirrel-6

wildlife animals

Green pitcher plant with flower

Juvenile pallid sturgeon -1

conservation fish

Biologists in boat study Gulf sturgeon in river-1

Hatchling Gopher tortoise feeding-3

reptiles animals

Pair of Wood storks

Black wolf pup

animals wyoming

Biologists tag a hellbender

north carolina amphibian

Black-footed Ferret-2

wildlife animals

Biologist in boat study Gulf sturgeon in river-1

Black-footed Ferret kits

wildlife animals

Biologists in boat net Gulf sturgeon in river-1

Endangered Braunton's milk-vetch

Biologist shows front view of Gulf sturgeon in river

Wyoming toad-1

Northern Aplomado Falcon-1

Biologists search for Fountain Darter-1

Juvenile atlantic salmon

Employee displays banded Hawai‘i creeper

Female Hawaii ‘Ākepa

Captive Devils Hole pupfish-2

Eastern small-footed bat-2

Cryogenic tanks for Pallid sturgeon sperm-1

Black wolf catches a Uinta ground squirrel

wildlife animals

Black-footed Ferrets in preconditioning pens

wildlife mammals

Eastern small-footed bat-1

Biologists search for Fountain Darter-3

Biologists dip net Gila trout out of tank into buckets-2

partnership new mexico

Colorado hookless Cactus-1

Biologists in boat net Gulf sturgeon in river-5

Biologists dip net Gila trout out of tank into buckets-5

partnership new mexico

Anglers catch and release

American paddlefish fry 5 week old

Recreational fishing on the Columbia River

Measuring a young bog turtle in a western north carolina bog

reptiles science

Red wolf on refuge-2

wildlife animals

Biologists in boat net Gulf sturgeon in river-1

Juvenile pallid sturgeon yearling

conservation fish

Ash Meadows Amargosa pupfish-1

Wyoming toad-1

amphibian animals

Wyoming toads-2

amphibian animals

Piping plover chick-3

Netting Gulf sturgeon in river

Juvenile pallid sturgeon -2

conservation fish

Delmarva Peninsula fox squirrel-6

wildlife animals

‘Alae ‘Ula (Hawaiian Moorehen)-2

Captive Devils Hole pupfish-4

Dwarf Lake iris

Vahl's Boxwood

Black-footed Ferret-2

wildlife mammals

Researchers track the movement of endangered Gray bats

Captive Devils Hole pupfish

Biologists show length of a Gulf sturgeon in river

Biologists show length of Gulf sturgeon in river

Juvenile yearling pallid sturgeon

conservation fish

Red wolf-1

wildlife animals

Volunteer holding a sub-adult humpback chub

Hatchling Gopher tortoise feeding-2

reptiles animals

Antioch Dunes Evening Primrose

Display at National Conservation Training Center-1

Devils Hole Pupfish in captivity-2

Ash Meadows Amargosa pupfish-1

Juvenile pallid sturgeon -3

conservation fish

Wyoming toad-1

amphibian animals

Captive Devils Hole pupfish-4

Biologist shows side view of Gulf sturgeon in river

Black-footed Ferret-2

wildlife animals

Biologists in boat net Gulf sturgeon in river-1

Fishing the Columbia River

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