Thomas Rabeil / Flock of Marabou Stork (Leptoptilos crumeniferus) taking flight at seasonal waterhole, seen from above. Sahelo-Sudanese Biome, W National Park (UNESCO, IUCN & RAMSAR), Niger. Aerial census, May 2011.

Thomas Rabeil / Malpolon / False Cobra (Malpolon moilensis) expanding its hood in a defensive display. Termit Massif, Niger, Africa.

Thomas Rabeil / Desert landscape seen from the air with solitary mountain rising from the sand. Termit Massif, Niger, Africa.

Thomas Rabeil / Fennec Fox (Fennecus / Vulpes zerda) sitting in the entrance to its burrow. Dilia Achetinamou Niger, Africa.

Thomas Rabeil / Fennec Fox (Fennecus / Vulpes zerda) looking out from its burrow. Dilia Achetinamou Niger, Africa.

Thomas Rabeil / Yellow-breasted Barbet (Trachyphonus margaritatus) perched on rock. Koutous Massif, Sahelo-Sudanese Biome, Niger.

Thomas Rabeil / Whiskered Tern (Chlidonias hybrida) in flight at seasonal waterhole. Dilia Achetinamou, Termit Tin Toumma National Park, Sahelo-Saharan Biome, Niger.

Thomas Rabeil / Whiskered Tern (Chlidonias hybrida) in flight at seasonal waterhole. Dilia Achetinamou, Termit Tin Toumma National Park, Sahara-Sahel Biome, Niger.

Thomas Rabeil / Whinchat (Saxicola rubetra) perched at seasonal waterhole. Termit Massif, Termit Tin Toumma National Park, Sahelo-Saharan Biome, Niger.

Thomas Rabeil / Typical Nigerien village settlement seen from the air. Sahelo-Sudanese Biome, W National Park (UNESCO, IUCN & RAMSAR), Niger. Aerial census, May 2011.

Thomas Rabeil / Swallow Tailed Kite (Chelictinia riocourii) perched in tree at seasonal waterhole. Dilia Achetinamou, Termit Tin Toumma National Park, Sahelo-Saharan Biome, Niger.

Thomas Rabeil / Ruff (Philomachus pugnax) foraging at seasonal water hole. Termit Massif, Termit Tin Toumma National Park, Sahelo-Saharan Biome, Niger.

Thomas Rabeil / Ruff (Philomachus pugnax) hidden among grass at seasonal waterhole. Termit Massif, Termit Tin Toumma National Park, Sahelo-Saharan Biome, Niger.

Thomas Rabeil / Two Ruff (Philomachus pugnax) at seasonal water hole. Termit Massif, Termit Tin Toumma National Park, Sahelo-Saharan Biome, Niger.

Thomas Rabeil / Group of Roan Antelope (Hippotragus equinus) seen from the air. Sahelo-Sudanese Biome, W National Park (UNESCO, IUCN & RAMSAR), Niger. Aerial census, May 2011.

Thomas Rabeil / Group of Roan Antelope (Hippotragus equinus) seen from the air. Sahelo-Sudanese Biome, W National Park (UNESCO, IUCN & RAMSAR), Niger. Aerial census, May 2011.

Thomas Rabeil / Red-fronted Gazelles (Eudorcas ruffifrons) in open habitat seen from the air. Sahelo-Sudanese Biome, W National Park (UNESCO, IUCN & RAMSAR), Niger. Aerial census, May 2011.

Thomas Rabeil / Red-fronted Gazelle (Eudorcas rufifrons) calf running, seen from the air. Sahelo-Sudanese Biome, W National Park (UNESCO, IUCN & RAMSAR), Niger. Aerial census, May 2011.

Thomas Rabeil / Nubian Bustard (Neotis nuba) on sand at seasonal waterhole. Termit Massif, Termit Tin Toumma National Park, Sahelo-Saharan Biome, Niger.

Thomas Rabeil / Namaqua Dove (Oena capensis) perched at seasonal waterhole. Termit Massif, Termit Tin Toumma National Park, Sahelo-Saharan Biome, Niger.

Thomas Rabeil / Lappet Faced Vultures (Torgos tracheliotos) and Ruppell's Vulture (Gyps rueppellii) perched and on ground. Dilia Achetinamou, Termit Tin Toumma National Park, Sahelo-Saharan Biome, Niger.

Thomas Rabeil / Lappet Faced Vulture (Torgos tracheliotos) and Brown-necked Raven (Corvus ruficolis) at a animal skeleton. Dilia Achetinamou, Termit Tin Toumma National Park, Sahelo-Saharan Biome, Niger.

Thomas Rabeil / Mekrou River flowing past eroded land, seen from the air. Sahelo-Sudanese Biome, W National Park (UNESCO, IUCN & RAMSAR), Niger. Aerial census, May 2011.

Thomas Rabeil / Patterns made in rock by erosion, seen from the air. Sahelo-Sudanese Biome, W National Park (UNESCO, IUCN & RAMSAR), Niger. Aerial census, May 2011.

Thomas Rabeil / Kob (Kobus kob) resting in shady grass. Sahelo-Sudanese Biome, W National Park, Niger.

Thomas Rabeil / Huts of the Wadi tribe in arid landscape, seen from the air. Near Niamey, Sahelo-Sudanese Biome, W National Park (UNESCO, IUCN & RAMSAR), Niger. Aerial census, May 2011.

Thomas Rabeil / Herd of Hartebeet (Alcelaphus buselaphus) near ash of campfire. Sahelo-Sudanese Biome, W National Park (UNESCO, IUCN & RAMSAR), Niger. Aerial census, May 2011.

Thomas Rabeil / Three Hartebeest (Alcelaphus buselaphus) seen from the air. Sahelo-Sudanese Biome, W National Park (UNESCO, IUCN & RAMSAR), Niger. Aerial census, May 2011.

Thomas Rabeil / Sudan Golden Sparrow (Passer luteus) perched at seasonal waterhole. Termit Massif, Termit Tin Toumma National Park, Sahelo-Saharan Biome, Niger.

Thomas Rabeil / Sudan Golden Sparrow (Passer luteus) perched at seasonal waterhole. Termit Massif, Termit Tin Toumma National Park, Sahelo-Saharan Biome, Niger.

Thomas Rabeil / Lesser Egyptian Gerboa (Jaculus jaculus) in the entrance to its burrow. Sahelo-Sudanese Biome, Niger.

Thomas Rabeil / Four African Elephants (Loxodonta africana) seen from the air. Sahelo-Sudanese Biome, W National Park (UNESCO, IUCN & RAMSAR), Niger. Aerial census, May 2011.

Thomas Rabeil / Herd of African Elephants (Loxodonta africana) seen from the air. Sahelo-Sudanese Biome, W National Park (UNESCO, IUCN & RAMSAR), Niger. Aerial census, May 2011.

Thomas Rabeil / Herd of African Elephants (Loxodonta africana) seen from the air. Sahelo-Sudanese Biome, W National Park (UNESCO, IUCN & RAMSAR), Niger. Aerial census, May 2011.

Thomas Rabeil / Dorcas Gazelle (Gazella dorcas) hiding in the shade of a rock on sand. Tin Toumma desert, Sahelo-Sudanese Biome, Niger.

Thomas Rabeil / Dorcas Gazelle (Gazella dorcas) on sand dune in arid landscape. Tin Toumma desert, Sahelo-Sudanese Biome, Niger.

Thomas Rabeil / Group of Dama Gazelle (Nanger dama) observing the cameraman. Critically endangered. Termit Massif plains, Termit Tin Toumma National Park, Sahelo-Saharan Biome, Niger.

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 / Booted Eagle (Aquila pennata) in tree set in arid landscape with mountains. Termit Massif, Termit Tin Toumma National Park, Sahelo-Saharan Biome, Niger.

Thomas Rabeil / Black Crowned Sparrow Lark (Eremopterix nigriceps) resting in shade at seasonal waterhole. Dilia Achetinamou, Termit Tin Toumma National Park, Sahelo-Saharan Biome, Niger.

Thomas Rabeil / Wild Cat (Felis sylvestris libyca) in dry desert grassland. Tin Toumma, Niger, Africa.

Thomas Rabeil / Wild Cat (Felis sylvestris libyca) walking over sand and dry grass. Tin Toumma, Niger, Africa.

Thomas Rabeil / Crash site of UTA Flight 772 seen from the air. The memorial was made in 2007. Niger, Africa, 2007.

Thomas Rabeil / Portrait of a Spurred Tortoise (Geochelone sulcata). Termit Massif, Niger, Africa.

Thomas Rabeil / A Sand Cat (Felis margerita) peering from its burrow. Tin Toumma, Niger, Africa.

Thomas Rabeil / Face of a Sand Cat (Felis margarita) camouflaged in dry desert grass. Critically endangered species. Tin Toumma, Niger, Africa.

Thomas Rabeil / Sand Cat (Felis margarita) crouching in sand. Critically endangered species. Tin Toumma, Niger, Africa.