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 / 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.

Hanne & Jens Eriksen / Chestnut bellied sandgrouse (Pterocles exustus) flock in flight, Oman, February

Hanne & Jens Eriksen / Chestnut bellied sandgrouse (Pterocles exustus) juvenile feeding, Oman, May

Christine Jung / Chestnut-bellied Sandgrouse (Pterocles exustus), Mirbat, Oman

Thomas Rabeil / Chestnut Bellied Sandgrouse (Pterocles exustus) on sandy ground at seasonal waterhole. Dilia Achetinamou, Termit Tin Toumma National Park, Sahelo-Saharan Biome, Niger.

Thomas Rabeil / Group of Chestnut Bellied Sandgrouse (Pterocles exustus) in flight at seasonal waterhole. Dilia Achetinamou, Termit Tin Toumma National Park, Sahelo-Saharan Biome, Niger.

Thomas Rabeil / Chestnut Bellied Sandgrouse (Pterocles exustus) standing on sand. Dilia Achetinamou, Niger, Africa.