Danny Green / Japanese crane (Grus japonensis) displaying, Hokkaido, Japan, February

Aflo / Red-Crowned Crane (Grus japonensis) flock roosting in icy river in winter, Tsurui, Hokkaido, Japan. February.

Markus Varesvuo / Black kite (Milvus migrans) flying and red-crowned crane (Grus japonensis) on snow, Hokkaido, Japan, February.

Hermann Brehm / Crowned crane (Balearica regulorum) with chicks, Ndutu, Tanzania.

Hermann Brehm / Crowned crane (Balearica regulorum) with chicks, Ndutu, Tanzania.

Thomas Marent / Red-crowned Crane (Grus japonensis) pair flying, Tsurui Ito Sanctuary, Hokkaido, Japan

Markus Varesvuo / Red-crowned Cranes (Grus japonensis) displaying and calling in snow, Hokkaido, Japan, February

Markus Varesvuo / Red-crowned Crane (Grus japonensis) in flight, Hokkaido, Japan, February

Markus Varesvuo / Red-crowned Crane (Grus japonensis) preening in snow,Hokkaido, Japan, February

Tim Laman / Two Red-crowned cranes (Grus japonensis) in flight in snow, Japan.

Tim Laman / Red-crowned crane (Grus japonensis) pair in a snowstorm, Hokkaido, Japan. Endangered species.

Denis-Huot / Banded mongoose (Mungos mungo) in confrontation with Grey Crowned Crane (Balearica regulorum) Masai-Mara game reserve, Kenya