David Tipling / Red-crowned Cranes (Grus japonensis) displaying at dawn Hokkaido, Japan, February. Did you know? Red crowned cranes mate for life.

Nick Upton / 2020VISION / Eurasian / Common crane chick (Grus grus) three days, under heat lamp attracted to food offered by ^crane head feeder^ captive, WWT Slimbridge, Gloucestershire, UK. 2020VISION Exhibition. 2020VISION B...

DAVID TIPLING / Sandhill cranes {Grus canadensis} at sunrise, Bosque del Apache, NM, USA 2006

Markus Varesvuo / Common crane (Grus grus) calling, Sweden, April

Shattil & Rozinski / Sandhill cranes {Grus canadensis} in mist, Colorado, USA

Ben Lascelles / Black-necked Crane (Grus nigricollis) feeding on the Tibetan Plateau, near Mount Kailash. Tibet. June 2010

David Tipling / Sandhill Cranes (Grus canadensis) on roosting pond Bosque del Apache, New Mexico, USA, January

Edwin Giesbers / Wattled crane (Burgeranus carunculatus) portrait, captive

John Downer / Crowned crane (Balearica regulorum) portrait, captive

Rod Williams / Blue crane {Grus paradisea} portrait. Captive.

Steven David Miller / Brolga crane (Grus rubicunda) head portrait, wildlife sanctuary, captive. North Queensland, Australia

Bernard Castelein / Two Sarus Cranes {Grus antigone} in field outside Keoladeo, Ghana NP, Bharatpur, India

LYNN M. STONE / Portrait of Whooping crane {Grus americana} endangered species, USA captive

Igor Shpilenok / Captive Great white / Siberian crane portrait at Breeding Centre, Oksky Russia.

LYNN M. STONE / Florida sandhill crane (Grus canadensis pratensis) vocalising, Lakeland, Florida, USA, January

Ben Cranke / White naped crane (Grus vipio) Kyushu, Japan

Ben Cranke / Flock of Hooded Cranes (Grus monacha) Kyushu, Japan

Bruno D'Amicis / Sudan black crowned crane (Balearica pavonina ceciliae) in wetland, vulnerable, Kaffa Zone, Southern Ethiopia, East Africa December 2008

JIM CLARE / White-naped crane (Grus vipio) building nest amongst reeds, Zhalong Res, NE China, vulnerable species

Nick Upton / Two Common / Eurasian crane eggs (Grus grus) on nest made of old reeds. Schorfheide-Chorin Biosphere Reserve, Brandenburg, Germany, April.

Wild Wonders of Europe / Shpilenok / Demoiselle crane (Anthropoides virgo) tending two eggs in its nest, Cherniye Zemli (Black Earth) Nature Reserve, Kalmykia, Russia, May 2009

Igor Shpilenok / Newly hatched Demoiselle crane chick next to unhatched egg, Russia.

Igor Shpilenok / Captive Siberian crane chick {Grus leucogeranus} at Oksky crane breeding centre, Russia.

Marie Read / Sandhill Crane (Grus canadensis), Florida race, close-up of two adults with two chicks, Orlando, Florida, USA

Adam White / LifeImmature Whooping crane filmed at Patuxent Reserve, Maryland, USA

Nick Upton / Great Crane Project team members Beate Blahy and Roland Digby returning from inspecting Eurasian / Common crane (Grus grus) nest in Black Alder (Alnus glutinosa) carr swamp forest in Germany. Schorfhe...

Nick Upton / 2020VISION / Group of recently released young Common / Eurasian cranes (Grus grus) feeding on grain scattered around adult crane models alongside a carer wearing a crane costume acting as a surrogate parent, Somer...

Ann & Steve Toon / Common / Eurasian crane chick (Grus grus) being exercised by 'crane mother' in crane costume, Great Crane captive breeding and reintroduction project, Wildfowl and Wetlands Trust, Slimbridge, Gloucest...

Mark Payne-Gill / Researcher + microlite in crane costume with Whooping crane chicks, USA. Operation migration

Anup Shah / Grey-crowned crane pair (Balearica regulorum) Masai Mara National Reserve, Kenya. December

Anup Shah / Three Grey crowned-cranes (Balearica regulorum) displaying, Masai Mara National Reserve, Kenya. December

Tony Heald / Blue Crane (Anthropoides paradiseus) performing its dance display. Etosha National Park, Namibia, January.

Dave Watts / Brolga crane 'dancing' display {Grus rubicunda} N Queensland, Australia

Jean-Pierre Zwaenepoel / Sarus cranes {Grus antigone} pair displaying, unison call, Keoladeo Ghana NP, Bharatpur, Rajasthan, India

Sharon Heald / Blue / Stanley crane tossing twig {Anthropoides paradisea} Etosha NP, Namibia

Bence Mate / Pair of Eurasian cranes (Grus grus) displaying, Sweden

Andy Trowbridge / Common / Eurasian crane (Grus grus) displaying. Lake Hornborga, Sweden, April.

Jorma Luhta / Two Common cranes displaying {Grus grus} Finland

Wild Wonders of Europe / Unterthiner / Common / Eurasian crane (Grus grus) displaying, Lake Hornborga, Hornborgasjn, Sweden, April 2009

Kerstin Hinze / Japanese / Red-crowned crane (Grus japonensis) pair displaying, calling, in snow, Tsurui, Kushiro-Shitsugen National Park, Hokkaido, Japan

Kerstin Hinze / Japanese / Red-crowned crane (Grus japonensis), pair displaying, calling, in snow, Tsurui-Ito Tancho Sanctuary, Hokkaido, Japan

Bernard Castelein / Demoiselle cranes {Anthropoides virgo} with local people, Khichan, Rajasthan, India

Bernard Castelein / Demoiselle cranes {Anthropoides virgo} on sand dunes, Khichan, Rajasthan, India

Ashok Jain / Demoiselle cranes in desert (Anthropoides virgo) Rajasthan, India

Bernard Castelein / Demoiselle Crane (Grus virgo) group on feeding ground, Khichan, Rajasthan, India

Wild Wonders of Europe / Unterthiner / Common / Eurasian cranes (Grus grus) some feeding others coming in to land near church, Lake Hornborga, Hornborgasjn, Sweden, April 2009

Markus Varesvuo / Flock of Crane (Grus grus) flying overhead with a cliff in the foreground. Spain, March.

Juan Carlos Munoz / Magnificent frigate bird (Fregata magnificens) in flight, Isla Holbox, Yucatan Peninsula, Mexico.

Fabrice Cahez / Common crane (Grus grus) flock flying in formation against grey clouded sky, Lac du Der, Champagne, France

Wild Wonders of Europe / Unterthiner / Common / Eurasian crane (Grus grus) flock, Lake Hornborga, Hornborgasjn, Sweden, April 2009

Ben Cranke,Ben Cranke / Flock of Hooded Cranes (Grus monacha) Kyushu, Japan

Kerstin Hinze / Japanese / Red-crowned crane (Grus japonensis) flock in snow, Tsurui, Kushiro-Shitsugen National Park, Hokkaido, Japan

Jean-Pierre Zwaenepoel / Great white / Siberian crane {Grus leucogeranus} endangered, captive reared and released with radio transmitter, Keoladeo Ghana NP, Bharatpur, Rajasthan, India, 1999

Bernard Castelein / Great white cranes {Grus leucogeranus} Keoladeo Ghana NP, India, overwintering in India

Edwin Giesbers / Red crowned / Japanese crane (Grus japonensis) portrait, captive, endangered

Edwin Giesbers / Crowned crane (Balearica regulorum) preening, captive

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

Edwin Giesbers / White-naped crane (Grus vipio) head close-up, captive

Sandesh Kadur / Black-necked Cranes (Grus nigricollis) calling at dawn in Phobjikha valley, Bhutan. IUCN vulnerable species.

Ben Cranke,Ben Cranke / White naped cranes (Grus vipio) in flight, Kyushu, Japan

Daniel Heuclin / Wattled Crane (Bugeranus carunculatus) head profile. Captive. Endemic to sub-Saharan Africa.

Tony Heald / Blue crane {Anthropoids / Grus paradisea}~Etosha national park, Namibia.

Ben Cranke / White naped crane (Grus vipio) in flight, Kyushu, Japan

Anup Shah / Crowned cranes displaying {Balearica regulorum} Lewa Downs, Kenya

Sergey Gorshkov / Silhouette of Wattled crane (Bugeranus carunculatus) in early morning mist, Okavango delta, Botswana, April

John Cancalosi / Wattled crane, endangered {Bugeranus carunculatus} South Africa {Grus carunculatus}

Tony Heald / Blue Crane (Anthropoides paradisea) preening its tail feathers. Etosha National Park, Namibia, January.

Tony Phelps / Blue Crane (Anthropoides paradiseus) standing in succulent fynbos, deHoop Nature resereve. Western Cape, South Africa, August.

Edwin Giesbers / Demoiselle crane (Anthropoides virgo) portrait, captive

Bernard Castelein / Demoiselle Crane (Grus virgo) in flight, Khichan, Rajasthan, India

Markus Varesvuo / Common crane (Grus grus) tending to eggs in nest, Pernaja, Finland, May 2005

Igor Shpilenok / Female Demoiselle crane defends nest from Saiga, Cherniye Zemly Zapovednik, Russia

Edwin Giesbers / Sarus crane (Grus antigone) preening, captive

Bernard Castelein / Sarus Crane (Grus antigone), courtship display, Keoladeo Ghana NP, Bharatpur, Rajasthan, India

Juergen Freund / Sarus Cranes (Grus antigone) in flight, Atherton Tablelands, Queensland, Australia

Dave Watts / Brolga cranes flying across setting sun (Grus rubicunda) Queensland, Australia

Hanne & Jens Eriksen / Whooping crane (Grus americana) pair with juvenile, Texas, USA, January, Endangered

Shattil & Rozinski / Whooping crane {Grus americanus} Texas, USA

David Tipling / Sandhill Crane {Grus canadensis} calling, Bosque del Apache, New Mexico, USA

Marie Read / Sandhill Crane (Grus canadensis), Florida race, two adults feeding with two chicks looking on, Orlando, Florida, USA

Diane McAllister / Sandhill crane (Grus canadensis) landing at sunset. North America. Highly honoured in the Art in Nature category of the Nature's Best Photography Windland Smith Rice International Awards Competition...

Peter Cairns / naturepl.com / Eurasian Crane (Grus grus) head close-up calling, Hornborga, Sweden, April

LYNN M. STONE / Sandhill crane {Grus canadensis} feeding at sunset, Florida, USA

Charlie Summers / Greater Sandhill Cranes (Grus canadensis tabida) foraging in a steamy irrigation ditch. Bosque del Apache, New Mexico, USA, February.

Diane McAllister / Two Sandhill cranes (Grus canadensis) wading quietly out into the water from shore. Bosque del Apache, New Mexico, USA, February

Staffan Widstrand / Wild Wonders of China / Black-necked crane (Grus nigricollis) in black and white silhoutte. Napa Lake, Yunnan province, China. Vulnerable species.

Xi Zhinong / Black necked cranes {Grus nigricollis} Guizhou China

Gavin Maxwell / Black-necked cranes {Grus nigricollis} in flight, Yarlung valley, Tibet, March 07. 'Wild China' series

Gavin Maxwell / Three Black necked cranes {Grus nigricollis} in flight, Yarlung valley, Tibet, March 07, 'Wild China' series

Ben Cranke / Flock of Hooded Cranes (Grus monacha) Kyushu, Japan