Karine Aigner / Sarus crane (Grus antigone), three standing in wetland with many birds perched in scrub behind. Keoladeo National Park/ Bharatpur Bird Sanctuary, Rajasthan, India.

Juergen Freund / Timelapse of Brolga cranes (Grus rubicunda) and Sarus cranes (Grus antigone) roosting at a waterhole, Bromfield Swamp, Wet Tropics World Heritage Area, North Queensland, Australia.

Peter Waechtershaeuser/ BIA / Sarus Crane (Grus antigone), Keoladeo National Park, India

Juergen Freund / Sarus crane (Grus antigone) flock foraging, Bromfield Swamp, Atherton Tablelands, Queensland, Australia.

Juergen Freund / Sarus cranes (Grus antigone) in flight over Bromfield Swamp, Atherton Tablelands, Queensland, Australia.

Juergen Freund / Sarus cranes (Grus antigone) in flight over Bromfield Swamp, Atherton Tablelands, Queensland, Australia.

Juergen Freund / Sarus cranes (Grus antigone) group of eight in flight, Atherton Tablelands, Queensland, Australia.

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

Juergen Freund / Sarus cranes (Grus antigone) two in flight, Atherton Tablelands, Queensland, Australia.

Juergen Freund / Sarus cranes (Grus antigone) group of six in flight, Bromfield Swamp, Atherton Tablelands, Queensland, Australia.

Juergen Freund / Sarus cranes (Grus antigone) group of six in flight, Bromfield Swamp, Atherton Tablelands, Queensland, Australia.

Roland Seitre / Sarus crane (Grus antigone) captive, occurs in India, South-East Asia and northern Australia. Vulnerable species.