Donald M. Jones / Snow Goose (Chen caerulescens) landing in field, central Montana

Gerrit Vyn / Greater snow geese (Chen caerulescens) taking flight at sunset during migration. Montezuma National Wildlife Rescue, New York, USA. March.

Donald M. Jones / Snow Goose (Chen caerulescens) group flying, central New Mexico

Donald M. Jones / Snow Goose (Chen caerulescens) flock flying at sunrise, central New Mexico

Jack Dykinga / Snow geese (Anser caerulescens) flying toward their gathering pond, with moon in the background, Boque del Apache National Wildlife Refuge, New Mexico. December.

Sergey Gorshkov / Snow geese (Chen caerulescens caerulescens) taking off, Wrangel Island, Far Eastern Russia, June.

Sergey Gorshkov / Snow goose (Chen caerulescens caerulescens) brooding chicks, with rusty orange face from iron rich soil in which it forages. Wrangel Island, Far Eastern Russia, June.

Yva Momatiuk & John Eastcott / Snow Goose (Chen caerulescens) flock taking flight from pond, Bosque del Apache National Wildlife Refuge, New Mexico

Jack Dykinga / Sandhill crane (Grus canadensis) landing in icy pond filled with snow geese (Chen caerulescens) Bosque del Apache, New Mexico. January 2013

Sergey Gorshkov / Snow Goose (Chen caerulescens) group taking flight and calling, Wrangel Island, Russia

Sergey Gorshkov / Snow Goose (Chen caerulescens) pair flying over flock on ground near snowy mountain range, Wrangel Island, Russia

Sergey Gorshkov / Snow Goose (Chen caerulescens) pair courting, Wrangel Island, Russia. Sequence 3 of 4