Gray fox in the Atacama Desert in Chile.
A Great potoo (Nyctibius grandis) is camouflaged as a dead tree branch in Brazil’s Pantanal region.
The Amargosa niterwort (endangered) is one of several plants that have adapted to the highly alkaline soils in Ash Meadows NWR.
The turkey vulture’s (common) special adaptation is its bare head; the carrion on which it feeds would quickly become infected in its feathers.
Ptarmigan with winter coloring at Prudhoe Bay, Alaska.
A gecko changes colors to blend in with a tree branch in Bolivia’s Madidi National Park.
A gray fox hunts at dusk in the Atacama Desert in Chile.
An Arctic fox (Alopex lagopus) in Prudhoe Bay, Alaska.
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