Marie Read / Sandhill cranes (Grus canadensis) (Florida race), adult with two small chicks crossing highway, Kissimmee, Florida, USA, March.

Charlie Summers / Greater sandhill crane (Grus canadensis tabida) flying next to a white-bodied Snow Goose (Chen caerulescens) Bosque del Apache, New Mexico, USA, January.

Charlie Summers / Venus, the evening star, and the Milky Way reflected in pond where Greater Sandhill Cranes roost, Bosque del Apache, New Mexico, December 2013.

Charlie Summers / Greater Sandhill Crane (Grus canadensis tabida) in flight at dawn, Bosque del Apache, New Mexico, December.

Charlie Summers / Greater Sandhill Cranes (Grus canadensis tabida) slowly move away from Coyotes (Canis latrans), Bosque del Apache, New Mexico, USA, December.

Charlie Summers / Greater Sandhill Crane (Grus canadensis tabida) flying just behind a blue phase of a Snow Goose or Blue Goose (Chen caerulescens) Bosque del Apache, New Mexico, USA, January.

Charlie Summers / Greater sandhill crane (Grus canadensis tabida) just folding its wings after landing in a snow covered field, Bosque del Apache, New Mexico

Charlie Summers / Five Greater Sandhill Cranes (Grus canadensis tabida) in flight, coming in to land. Bosque del Apache, New Mexico, December.

Charlie Summers / Flock of Greater Sandhill Cranes (Grus canadensis tabida) against darkening sunset. New Mexico, December.

Charlie Summers / The silhouette of a Greater Sandhill Crane (Grus canadensis tabida) as it prepares to land. Bosque del Apache, New Mexico, USA, January.

Charlie Summers / Greater Sandhill Crane (Grus canadensis tabida) taking off from a frozen pond. Bosque del Apache, New Mexico, USA, February.

Charlie Summers / Four Greater Sandhill Cranes (Grus canadensis tabida) preparing to take off. Bosque del Apache, New Mexico, USA, February.