Krista Schlyer / Whooping crane (Grus americana) International Crane Foundation, Wisconson, USA. Captive.

Rolf Nussbaumer / Whooping Crane (Grus americana) wading in coastal waters, Seadrift, San Antonio Bay, Gulf Intracoastal Waterway, Coastal Bend, Texas Coast, USA

Gerrit Vyn / Adult Whooping Cranes (Grus americana) from the wild population, foraging in a corn field during spring migration. Central South Dakota, USA, April.

LYNN M. STONE / Whooping crane (Grus americana) head portrait, Endangered species USA, captive

Jim Brandenburg / Whooping Crane (Grus americana) preening in shallow water, Wisconsin

Gerrit Vyn / Whooping cranes (Grus americana) taking off during spring migration. Central South Dakota, USA. April.

Krista Schlyer / Whooping crane (Grus americana) International Crane Foundation, Wisconson, USA. Captive.

Krista Schlyer / Whooping crane (Grus americana) International Crane Foundation, Wisconson, USA. Captive.

Krista Schlyer / Whooping crane (Grus americana) International Crane Foundation, Wisconson, USA. Captive.

Pal Hermansen / Whooping (Cygnus cygnus) swans, abstract photograph, Norway, February.

Alan Murphy / Whooping Crane (Grus americana) picking up a crab, Texas

Hanne & Jens Eriksen / Whooping crane (Grus americana) in flight, Texas, USA, January, Endangered