Protected images - Joel Sartore

Siskiyou National Forest serves as home and protector to wildlife including the federally endangered northern spotted owl (Strix occidentalis caurina).

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Siskiyou National Forest serves as home and protector to wildlife including the federally endangered northern spotted owl (Strix occidentalis caurina).

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An aerial of bayou DeView, where there have been ivory billed woodpecker sightings in Arkansas.

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Miners masked against sun and cold carve up the land in search of borax in Chile’s Atacama desert.

Picture of a mother mountain goat (Oreamnos americanus) and her baby rest on a rocky ledge in Glacier National Park, Montana.

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A mother mountain goat (Oreamnos americanus) and her baby rest on a rocky ledge in Glacier National Park, Montana.

Picture of a mother mountain goat (Oreamnos americanus) and her baby on a rocky ledge in Glacier National Park, Montana.

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A mother mountain goat (Oreamnos americanus) and her baby on a rocky ledge in Glacier National Park, Montana.

Picture of a mother mountain goat (Oreamnos americanus) and her baby walk down a rocky path in Glacier National Park, Montana.

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A mother mountain goat (Oreamnos americanus) and her baby walk down a rocky path in Glacier National Park, Montana.

A grasshopper sparrow (Ammodramus savannarum) nest is well camouflaged in the thick prairie grasses along the Platte River near Wood River, Nebraska.

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A grasshopper sparrow (Ammodramus savannarum) nest is well camouflaged in the thick prairie grasses along the Platte River near Wood River, Nebraska.

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Workers sift through sand to separate the oil on the beaches of Dauphin Island, Alabama.

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Workers from Southern Native Plants out of Milton, Florida planting sea oats (Uniola paniculata) on a newly created sand dune to protect Dauphin Island, Alabama from the deep water horizon oil spill.