Patricio Robles Gil / Young Gelada baboon (Theropitecus gelada) resting on tree, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Gelada baboon (Theropitecus gelada) male portrait, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Gelada baboon (Theropitecus gelada) female grooming male, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Gelada baboon (Theropitecus gelada) young resting on rock, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Gelada baboon (Theropitecus gelada) mother grooming young, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Gelada baboon (Theropitecus gelada) resting young playing, jumping over rocks, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Thick billed raven (Corvus crassirostris) calling, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Thick billed raven (Corvus crassirostris) perched on Lobelia, calling, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Thick billed raven (Corvus crassirostris) pair displaying, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Augur buzzard (Buteo rufofuscus) in flight, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Gelada baboon (Theropitecus gelada) male with troop of females in landscape, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Tawny eagle (Aquila rapax) perched, watching for possible attack by bird of prey, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Bearded vulture (Gypaetus barbatus) in flight, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Bearded vulture (Gypaetus barbatus) in flight, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Thick billed raven (Corvus crassirostris) in flight, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Walia ibex (Capra ibex walie) female, Simien Mountains NP, Ethiopia, Endangered

Patricio Robles Gil / Landscape with Giant lobelias, Simien Mountains NP, Ethiopia, November 2006

Patricio Robles Gil / Walia ibex (Capra ibex walie) male, Simien Mountains NP, Ethiopia, Endangered

Patricio Robles Gil / Walia ibex (Capra ibex walie) Female and young, Simien Mountains NP, Ethiopia, Endangered

Patricio Robles Gil / Walia ibex (Capra ibex walie) male, females and young on steep slope, Simien Mountains NP, Ethiopia, Endangered

Patricio Robles Gil / Bearded vulture (Gypaetus barbatus) in flight, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Walia ibex {Ibex capra walie) male and female courtship, Simien NP, Ethiopia, Endangered, note steep agricutural terraces in background

Patricio Robles Gil / Walia ibex (Capra ibex walie) with Gelada baboons {Theropithicus gelada} Simien Mountains NP, Ethiopia

Patricio Robles Gil / Walia ibex (Capra ibex walie) female with Gelada baboons (Theropithecus gelada), Simien Mountains NP, Ethiopia

Patricio Robles Gil / Walia ibex (Capra ibex walie) female with Gelada baboons (Theropithecus gelada), Simien Mountains NP, Ethiopia

Patricio Robles Gil / Bearded vulture (Gypaetus barbatus) perched on rock, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Bearded vulture (Gypaetus barbatus) perched on rock, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Tacazze sunbird (Nectarinia tacazze) perched, backlit, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Local woman with goat, wearing traditional hat, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Tacazze sunbird (Nectarinia tacazze) flying to bush, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Tawny eagle (Aquila rapax) perched, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Ruppell's griffon vulture (Gyps rueppelli) perched, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Rupell's griffon vulture (Gyps rueppelli) perched, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Gelada baboon (Theropitecus gelada) male interacting with young up tree, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Thick billed raven (Corvus crassirostris) calling, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Bearded vulture (Gypaetus barbatus) covered in wet mud, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Bearded vulture (Gypaetus barbatus) covered in wet mud, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Black kite (Milvus migrans) in flight, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Thick billed raven (Corvus crassirostris) in flight, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Bearded vulture {Gypaetus barbatus} Simien Mountains NP, Ethiopia

Patricio Robles Gil / Ruppell's griffon vulture {Gyps rueppelli} with wings outstretched, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Tawny eagle (Aquila rapax) in flight, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Tawny eagle (Aquila rapax) portrait, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Thick billed ravens (Corvus crassirostris) playing together in flight, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Tawny eagle (Aquila rapax) Simien Mountains NP, Ethiopia

Patricio Robles Gil / Tawny eagle (Aquila rapax) with wings raised, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Bearded vulture (Gypaetus barbatus) portrait, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Thick billed raven (Corvus crassirostris) wet after rain, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Tacazze sunbird (Nectarinia tacazze) feeding on Giant lobelia plant, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Tawny eagle (Aquila rapax) perched, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Local woman with children in traditional dress, Simien Mountains NP, Ethiopia, December 2005

Patricio Robles Gil / Gelada baboon (Theropitecus gelada) male portrait, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Gelada baboon (Theropitecus gelada) male portrait, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Gelada baboon (Theropitecus gelada) mother grooming baby, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Gelada baboon (Theropitecus gelada) male yawning baring teeth, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Gelada baboon (Theropitecus gelada) male portrait, sitting, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Gelada baboon (Theropitecus gelada) rear view of male sitting on rock, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Red eyed dove (Streptopelia semitorquata) perched, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Ruppell's vulture (Gyps rueppellii) aggressive posture, Simien Mountains NP, Ethiopia.

Patricio Robles Gil / Thick billed raven (Corvus crassirostris) pair, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Two young male Walia ibex (Capra ibex walie) Simien Mountains NP, Ethiopia, Endangered

Patricio Robles Gil / Male, female and young Walia ibex (Capra ibex walie) Simien Mountains NP, Ethiopia, Endangered

Patricio Robles Gil / Young Walia ibex (Capra ibex walie) Simien Mountains NP, Ethiopia, endangered

Patricio Robles Gil / Female Walia ibex (Capra ibex walie) on rock face, Simien Mountains NP, Ethiopia, Endangered

Patricio Robles Gil / Male Walia ibex (Capra ibex walie) Simien Mountains NP, Ethiopia, Endangered

Patricio Robles Gil / Male Walia ibex (Capra ibex walie) Simien Mountains NP, Ethiopia, Endangered

Patricio Robles Gil / Two male Walia ibex (Capra ibex walie) fighting, Simien Mountains NP, Ethiopia, endangered

Patricio Robles Gil / Walia ibex (Capra ibex walie) male with Gelada baboons (Theropithecus gelada), Simien Mountains NP, Ethiopia, Endangered

Patricio Robles Gil / Male Walia ibex (Capra ibex walie) Simien Mountains NP, Ethiopia

Patricio Robles Gil / Male Walia ibex (Capra ibex walie) Simien Mountains NP, Ethiopia

Patricio Robles Gil / Male Walia ibex (Capra ibex walie) Simien Mountains NP, Ethiopia

Patricio Robles Gil / Three Male Walia ibex (Capra ibex walie) Simien Mountains NP, Ethiopia

Patricio Robles Gil / Wattled ibis (Bostrychia carunculata) pair in hail storm, Simien Mountains NP, Ethiopia, December

Patricio Robles Gil / Yellow afro-alpine flowering plant, Simien Mountains NP, Ethiopia

Patricio Robles Gil / Young shepherd boy with goat skin and traditional hat caring for goats, Simien Mountains, Ethiopia, December 2006

Patricio Robles Gil / Male Walia ibex (Capra ibex walie) Simien Mountains NP, Ethiopia

Patricio Robles Gil / Peregrine falcon (Falco peregrinus) perched on top of Giant Lobelia flower (Lobelia sp) Simien Mountains NP, Ethiopia

Patricio Robles Gil / Male Walia ibex (Capra ibex walie) feeding on Giant lobelia Simien Mountains NP, Ethiopia

Chadden Hunter / Chadden Hunter (scientific consultant), directs the camera into position as the team use a jib arm to swing the HD camera out over a 300 metre sheer drop in the Simien Mountains NP, Ethiopia, to film...

Chadden Hunter / Scientific consultant, Chadden Hunter, directing the camera into position as the team use a jib arm to swing the HD camera out over a 300 metre sheer drop in the Simien Mountains to film the rare Wali...

Chadden Hunter / Cameraman, Ted Giffords and other crew standing on the edge of 300m high cliffs in the Simien Mountains filming the dawn light hitting the escarpment, for the Mountains episode of the BBC tv series Pl...

Chadden Hunter / Male Gelada baboon (Theropithecus gelada) yawning (filmed for the Mountains episode of the BBC tv series Planet Earth) Simien Mountains National Park, Ethiopia, Oct 2003

Chadden Hunter / Male Gelada baboon (Theropithecus gelada) bares his canines in a defensive response to the pink eye-brow flash threat of another male, for the Mountains episode of the BBC tv series Planet Earth, Simi...

Chadden Hunter / Wildlife biologist, Dr. Chadden Hunter, standing at the top of a 300 metre sheer drop scouting the cliffs of the Simien Mountains looking for the Walia Ibex mountain goat, for the Mountains episode of...

Chadden Hunter / Cameraman, Martyn Colbeck, filming the volcanic pinnacles using a 35mm film camera held out of the helicopter door on a stabilised mount, for the Mountains episode of the BBC tv series Planet Earth, S...

Chadden Hunter / Wildlife biologist, Dr. Chadden Hunter, filming Gelada baboons (Theropithecus gelada) for the Mountains episode of the BBC tv series Planet Earth, Simien Mountains National Park, Ethiopia, Oct 2003 (...

Anup Shah / Gelada baboon (Theropithecus gelada) infant, 12-18 months, Simien Mountains National Park, Ethiopia, November

Anup Shah / Two Gelada baboon (Theropithecus gelada) infants, 12-18 months, Simien Mountains National Park, Ethiopia, November

Anup Shah / Juvenile Gelada baboons (Theropithecus gelada) huddling against a mature male to protect themselves against the rain, Simien Mountains National Park, Ethiopia, November

Anup Shah / Harem of female Gelada baboons (Theropithecus gelada) confronting a rival male, aggression shown with lip flips, Simien Mountains National Park, Ethiopia, November

Anup Shah / Gelada baboon (Theropithecus gelada) infants taking on an older juvenile, Simien Mountains National Park, Ethiopia, November

Anup Shah / Juvenile Gelada baboons (Theropithecus gelada) play fighting on cliff edge, Simien Mountains National Park, Ethiopia, November

Anup Shah / Female Gelada baboon (Theropithecus gelada) protecting dead foetus from a Thick billed raven (Corvus crassirostris) Simien Mountains National Park, Ethiopia, November

Anup Shah / Mature male Gelada baboon (Theropithecus gelada) mounting sub-mature male as part of a social ritual, Simien Mountains National Park, Ethiopia, November

Anup Shah / Gelada baboon (Theropithecus gelada) males fighting, Simien Mountains National Park, Ethiopia, November

Anup Shah / Gelada baboon (Theropithecus gelada) group resting and grooming, Simien Mountains National Park, Ethiopia, November