Holger Duty/ BIA / Common Crane (Grus grus) flock flying dangerously close to windmill, Mecklenburg-Vorpommern, Germany

Francisco Marquez / Common crane (Grus grus) in a blizzard, Gallocanta Lake, Aragon, Spain, February.

Ralf Kistowski/ BIA / Common Crane (Grus grus) group flying at sunset, Mecklenburg-Vorpommern, Germany

Thomas Krumenacker/ BIA / Common Crane (Grus grus) flock at sunrise, Brandenburg, Germany

Loic Poidevin / Common crane (Grus grus) group of three in flight, Lake Hornborga, Sweden , April

Bence Mate / Eurasian crane (Grus grus) in flight, Sweden, April

Bence Mate / Blurred image of two Common cranes (Grus grus) in flight, Sweden.

Danny Green / Common cranes (Grus grus) displaying, Hula Valley, Northern Israel, January

Markus Varesvuo / Common Crane (Grus grus) displaying in snow, Kuusamo Finland, April (Some background added.)

Markus Varesvuo / Flock of Common Crane (Grus grus) in flight at sunrise. Hornborga, Sweden, Scandinavia. April.

Markus Varesvuo / Common crane (Grus grus) displaying in defense against Red fox {Vulpes vulpes} Pernaja, Finland, May 2005. Magic Moments book plate.

Juan Carlos Munoz / Flock of Common cranes (Grus grus) silhouetted at dusk, Hornborga, Sweden, April.