Mark Carwardine / Mauritius / Mascarene / Echo parakeet (Psittacula eques) flying, threatened / endangered species, Black River Gorges, Mauritius, Indian Ocean, wild

Mark Carwardine / Mauritius / Mascarene / Echo parakeet (Psittacula eques) threatened / endangered species, Black River Gorges, Mauritius, Indian Ocean, wild

Mark Carwardine / Mauritius / Mascarene / Echo parakeet (Psittacula eques) Threatened / endangered species, Mauritian Wildlife Foundation breeding centre, Mauritius, captive

Mark Carwardine / Mauritius / Mascarene / Echo parakeet (Psittacula eques) Threatened / endangered species, Mauritian Wildlife Foundation breeding centre, Mauritius, captive

Jerry Monkman / A man climbs "Top of the Prow" rock on Cathedral Ledge. Echo Lake State Park, White Mountains, in North Conway, New Hampshire, USA. October 2009, Model released

Jerry Monkman / A man climbs "Top of the Prow" rock on Cathedral Ledge. Echo Lake State Park, White Mountains, in North Conway, New Hampshire, USA. October 2009, Model released

Jerry Monkman / A man rock climbing near the top of Cathedral Ledge. Echo Lake State Park, White Mountains, in North Conway, New Hampshire, USA. October 2009, Model released

David Noton / Panoramic view of Echo Lake, White Mountains, New Hampshire, New England, USA, North America

John Sparks / African elephant breeding herd (including Echo from Cynthia Moss EB family study group) Amboseli National Park, Kenya.

John Sparks / Elephants (including Echo & Ella of Cynthia Moss EB family study group) Amboseli NP, Kenya, East Africa

John Sparks / African elephant breeding herd. Amboseli National Park, Kenya. Cynthia Moss EB family study group the subject of Echo the Elephant.

Oriol Alamany / Hikers walking past a beech (Fagus sylvatica) in Echo Valley, Los Valles Occidentales,Natural Park, Pyrenees, Huesca, Aragon, Spain

Rick Tomlinson / Club Swan 42 "Long Echo" during Antigua Race Week 2008. Day 1, halfway round the Island Race, Falmouth to Dickenson Bay anti clockwise.

Ernie Janes / Echo Crater, Waimangu, North Island, New Zealand, 2009

Ernie Janes / Echo Crater after 1886 eruption, Waimangu, North Island, New Zealand

Jerry Monkman / Echo Lake as seen from Beech Cliff, Acadia National Park, Maine, USA, August 2009

Mark Carwardine / Mauritius / Mascarene / Echo parakeets (Psittacula eques) in habitat, threatened / endangered species, Black River Gorges, Mauritius, Indian Ocean, wild

Mark Carwardine / Mauritius / Mascarene / Echo parakeet (Psittacula eques) threatened / endangered species, Black River Gorges, Mauritius, Indian Ocean, wild

Mark Carwardine / Mauritius / Mascarene / Echo parakeet (Psittacula eques) Threatened / endangered species, Mauritian Wildlife Foundation breeding centre, Mauritius, captive

Mark Carwardine / Mauritius / Mascarene / Echo parakeet (Psittacula eques) Threatened / endangered species, Mauritian Wildlife Foundation breeding centre, Mauritius, captive

Mark Carwardine / Mauritius / Mascarene / Echo parakeet (Psittacula eques) feeding in cage at feeding bowls, Threatened / endangered species, Mauritian Wildlife Foundation breeding centre, Mauritius, captive

Mark Carwardine / Mauritius / Mascarene / Echo parakeet (Psittacula eques) Threatened / endangered species, Mauritian Wildlife Foundation breeding centre, Mauritius, captive

Mark Carwardine / Mauritius / Mascarene / Echo parakeet (Psittacula eques) Threatened / endangered species, Mauritian Wildlife Foundation breeding centre, Mauritius, captive

Mark Carwardine / Mauritius / Mascarene / Echo parakeet (Psittacula eques) Threatened / endangered species, Mauritian Wildlife Foundation breeding centre, Mauritius, captive

Jerry Monkman / View of Moat Mountain from Cathedral Ledge in Echo Lake State Park, White Mountains, North Conway, New Hampshire, USA. October 2009

Jerry Monkman / View of White Horse Ledge, Cathedral Ledge, and Echo Lake, Echo Lake State Park, White Mountains, North Conway, New Hampshire, USA. October 2009

Jerry Monkman / A woman leads a climb of "Top of the Prow" rock on Cathedral Ledge. Echo Lake State Park, White Mountains, in North Conway, New Hampshire, USA. October 2009

Jerry Monkman / A woman leads a climb of "Top of the Prow" on Cathedral Ledge. Echo Lake State Park, White Mountains, in North Conway, New Hampshire, USA. October 2009

Jerry Monkman / A woman rappels from the top of Cathedral Ledge. Echo Lake State Park, White Mountains, in North Conway, New Hampshire, USA. October 2009

Jerry Monkman / A man rock climbing near the top of Cathedral Ledge. Echo Lake State Park, White Mountains, in North Conway, New Hampshire, USA. October 2009

Jerry Monkman / A man rock climbing near the top of Cathedral Ledge. Echo Lake State Park, White Mountains, in North Conway, New Hampshire, USA. October 2009

Stephen Dalton / Greater false vampire bat (Megaderma lyra) flying in complete darkness between wire strands, demonstrating echo location, Research at Frankfurt University, Germany, controlled conditions

Stephen Dalton / Mexican Bulldog / Fishing bat (Noctilio leporinus) This large bat catches fish with its feet in a similar fashion to the osprey, except it uses echo location to detect the water ripples produced by t...

Mark Taylor / Ginger kitten hiding under the legs of a German Shepherd Dog (Alsatian) bitch puppy, Echo.

Mark Taylor / German Shepherd Dog (Alsatian) bitch puppy, Echo, with a tabby kitten.

Mark Taylor / Ginger kitten with German Shepherd Dog (alsatian) bitch puppy, Echo.

Mark Taylor / German Shepherd Dog bitch puppy, Echo, with grey windmill-eared rabbit.

Mark Taylor / German Shepherd Dog (Alsatian) bitch puppy, Echo, lying with head raised

Mark Taylor / German Shepherd Dog (Alsatian) bitch puppy, Echo, lying with head raised.

Mark Taylor / German Shepherd Dog bitch puppy, Echo.

Mark Taylor / German Shepherd Dog bitch pup, Echo, lying with head up.

Mark Taylor / German Shepherd Dog (Alsatian) bitch puppy, Echo, with Lionhead rabbit.

Mark Taylor / German Shepherd Dog bitch puppy, Echo, rolling playfully.

Mark Taylor / German Shepherd Dog bitch puppy, Echo, with Lionhead rabbit.

Mark Taylor / German Shepherd Dog (Alsatian) bitch puppy, Echo, with grey windmill-eared rabbit.

Mark Taylor / German Shepherd Dog bitch puppy, Echo, with a tabby kitten.

Mark Taylor / German Shepherd Dog bitch puppy, Echo, looking up

Mark Taylor / Tabby kitten getting cross with a German Shepherd Dog bitch puppy, Echo.

Mark Taylor / German Shepherd Dog bitch puppy, Echo, with grey windmill-eared rabbit.

Shattil & Rozinski / Mooonwort {Botrychium echo} USA

Shattil & Rozinski / Mooonwort {Botrychium echo} leaf USA

Mark Taylor / German Shepherd Dog bitch puppy, Echo, wearing a Father Christmas hat.

Shattil & Rozinski / Moonwort {Botrychium echo} showing sporangia on fertile leaf, Colorado, USA

Jack Dykinga / Rock spires in last rays of sunset, Echo Canyon, Chiricahua National Monument, Arizona, USA

Todd Pusser / Atlantic spotted dolphin using echo-location to find fish in sand, Atlantic.

Cynthia Moss / Camerman Martyn Colbeck and elephant calf Ebony, daughter of Echo, on location for BBC programme Echo the Elephant, 1995

Julian Hume / Illustration of Mauritius dawn showing extinct species. A Mauritius giant tortoise (Cylindraspis inepta) - extinct c 1730 - awaits the warmth of the morning sun,while the Thirioux's grey parrot (Psitt...

Julian Hume / Illustration of Broad billed parrot / Raven parrot (Lophopsittacus mauritianus) - extinct 1674 - male right,female left,with echo parakeet (Psittacula echo),the only surviving Mascarene parrot (critic...

MARTYN COLBECK / Martyn Colbeck on location in Amboseli NP, Kenya, filming from Landrover for BBC television programme "Echo of the Elephants: The next Generation" filmed 1992-1995, Kenya

MARTYN COLBECK / Martyn Colbeck on location in Amboseli NP, filming Elephants for BBC television programme "Echo of the Elephants: The next Generation" filmed 1992-1995, Kenya

MARTYN COLBECK / Martyn Colbeck on location at Amboseli Elephant Research Camp, Kenya, with elephants in the background. On location for BBC television programme "Echo of the Elephants: The next Generation" filmed 199...

Nick Garbutt / Mauritius parakeet in aviary {Psittacula echo} Mauritius