Oscar Diez / Pin-tailed Sandgrouse (Pterocles alchata) male, Castile-La Mancha, Spain

Hanne & Jens Eriksen / Arabian gazelle {Gazella gazella} and Chestnut-bellied sandgrouse {Pterocles exustus} drinking from pool of water, Oman

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

Hanne & Jens Eriksen / Chestnut bellied sandgrouse {Pterocles exustus} male, collecting water in feathers, Jaaluni, Oman

Melvin Grey / Chestnut-bellied sandgrouse (Pterocles exustus olivascens) male. Ndutu, Tanzania.

Melvin Grey / Black-faced sandgrouse (Pterocles decoratus) pair standing, reflected in pool. Meru National Park, Kenya.

Melvin Grey / Chestnut-bellied sandgrouse (Pterocles exustus olivascens) pair in flight. Meru National Park, Kenya.

Melvin Grey / Chestnut-bellied sandgrouse (Pterocles exustus olivascens) male soaking feathers to provide chicks at nest with water. Meru National Park, Kenya.

Melvin Grey / Yellow-throated sandgrouse (Pterocles gutturalis saturatior) male. Ndutu, Tanzania. Medium repro only.

Winfried Wisniewski / Burchell's Sandgrouse (Pterocles burchelli) in waterhole, Kgalagadi Transfrontier Park, South Africa

Alain Dragesco-Joffe / Spotted sandgrouse (Pterocles senegallus) female drinking at waterhole, Sahara.

Alain Dragesco-Joffe / Spotted sandgrouse (Pterocles senegallus) female drinking at waterhole, Sahara.