shoulders-up images - Joel Sartore

A male Attwater’s prairie chicken at The Nature Conservancy’s Texas City Prairie Preserve.

One of few remaining wild male Attwater’s prairie-chickens looks out from its hiding place at The Nature Conservancy’s Texas City Prairie Preserve.

A male marsh deer (Blastocerus dichotomus) forages in Brazil’s Pantanal region. (IUCN: Vulnerable)

A male marsh deer (Blastocerus dichotomus) forages in Brazil’s Pantanal region. (IUCN: Vulnerable)

A male marsh deer (Blastocerus dichotomus) forages in Brazil’s Pantanal region. (IUCN: Vulnerable)

Manchado, a Mexican spotted owl (Strix occidentalis lucida) at The Wildlife Center in Espanola, New Mexico.

National Geographic Photographer and Speaker