Staffan Widstrand / Indian jungle crow (Corvus culminatus) Keoladeo Ghana National Park, Bharatpur, Rajasthan, India

Barrie Britton / White-rumped Vulture (Gyps bengalensis) with large-billed Crow (Corvus macrorhynchos). Preah Vihear Protected Forest, Cambodia. Picture taken during filming for BBC 'Lands of the Monsoon' TV series.

Chris Gomersall / Carcass of cow with scavenging Thick billed crows (Corvus macrorhynchos) and feral dog. Haryana, India. March 2005. The population crash of wild vultures in the Indian subcontinent has caused concerns...

Chris Gomersall / Wild oriental white-backed (Gyps bengalensis) adult being mobbed by large-billed crow (Corvus macrorhynchos) in Haryana, India. March

Roland Seitre / Jungle Crow (Corvus macrorhynchos) on rock, Bhutan.

Roland Seitre / Jungle Crow (Corvus macrorhynchos) on rock, Bhutan.

Bernard Castelein / Jungle crow (Corvus macrorhynchos) perched on sheep skull, Khichan, India

Bernard Castelein / Jungle crow scavenging dead cow {Corvus macrorhynchos} Keoladeo Ghana / Bharatpur NP, Rajasthan, India

Ashish & Shanthi Chandola / Large-billed crow (Corvus macrorhynchos). Bhutan.