Hanne & Jens Eriksen / Flock of Chestnut-bellied sandgrouse {Pterocles exustus} at waterhole, Jaaluni, Oman, May

Hanne & Jens Eriksen / Chestnut bellied sandgrouse female {Pterocles exustus} Jaaluni, Oman

Hanne & Jens Eriksen / Chestnut bellied sandgrouse male drinking {Pterocles exustus} Jaaluni, Oman

Hanne Jens Eriksen / Male Chestnut bellied sandgrouse {Pterocles exustus} taking off from pond, Oman,

Anup Shah / Flock of Chestnut bellied sandgrouse at water {Pterocles exustus} Serengeti NP, Tanzania.

Anup Shah / Flock of Chestnut bellied sandgrouse at water {Pterocles exustus} Serengeti NP, Tanzania.

Joel Sartore / Photo Ark / Chestnut-bellied sandgrouse (Pterocles exustus erlangeri) pair, portrait, Wadi Al Safa Wildlife Center, Dubai. Captive.

Roland Seitre / Chestnut-bellied sandgrouse (Pterocles exustus) flock taking flight, Lac de Guiers, Ferlo, Senegal.

Roland Seitre / Chestnut-bellied sandgrouse (Francolinus erckelii) standing on bare ground, Waikoloa village, Big Island, Hawaii.

Ashish & Shanthi Chandola / Chestnut-bellied sandgrouse ( Pterocles exustus), male, Rajasthan, India.

Ashish & Shanthi Chandola / Chestnut-bellied Sandgrouse ( Pterocles exustus), male with wel lcamouflaged chicks on stoney ground, Rajasthan, India, July

Ashish & Shanthi Chandola / Chestnut-bellied sandgrouse (Pterocles exustus), female, Rajasthan, India.