Thomas Marent / Buckley's Slender-legged Treefrog (Osteocephalus buckleyi), Putumayo, Colombia

Chien Lee / Asian Brown Tortoise (Manouria emys) male in rainforest, Tawau Hills Park, Sabah, Malaysia

Paul Bertner / Blue-legged Chameleon (Calumma crypticum) curled tail, Ranomafana National Park, Madagascar

Glenn Bartley/ BIA / Red-legged Honeycreeper (Cyanerpes cyaneus), Costa Rica

Marie Read / Eared grebes (Podiceps nigricollis), pair, one adult carrying food (damselfly) for two chicks riding on the other adult's back, Bowdoin National Wildlife Refuge, Montana, USA

Donald M. Jones / Burrowing Owl (Athene cunicularia) owlets at burrow with one stretching, Montana

Ron Bielefeld / Burrowing Owl (Athene cunicularia) juvenile, Florida

Markus Varesvuo / Rough-legged Buzard (Buteo lagopus) flying over water, Porvoo Finland

Juan Carlos Munoz / Red-legged Seriema (Cariama cristata) portrait, captive, Apenheul Park, Netherlands.

Juan Carlos Munoz / Two juvenile Atlantic yellow legged gulls (Larus michahellis) in flight, Izmir, Turkey, October.

Markus Varesvuo / Large flock of Kittiwakes (Rissa tridactyla) flying over the sea, Vardo, Norway, March.

Theo Bosboom,Theo Bosboom / White-legged damselfly (Platycnemis pennipis), Meinerswijk, The Netherlands, June 2005. Highly commended, Animal portraits category, Wildlife Photographer of the Year Awards 2006.

Colin Varndell,Colin Varndell / White Legged Snake Millipede (Tachypodoiulus niger) three coiled, Dorset, UK, September.

MYN / Seth Patterson / Texas bow-legged bug (Hyalymenus tarsatus) nymph on Tamaulipan fiddlewood (Citharexylum berlandieri) berries, Sabal Palm Sanctuary, Lower Rio Grande Valley, Texas, USA, September. meetyourneighbours.n...

Roy Mangersnes / Black-legged kittiwakes (Rissa tridactyla) on an old building including one landing, Finnmark, Norway, April

Roy Mangersnes / Juvenile Black-legged kittiwake (Rissa tridactyla) flying over Raudfjorden, North-western tip of Spitsbergen, Svalbard, Norway, September

MYN / Piotr Naskrecki / Long legged fly (Condylostylus sp) portrait, Concord, Massachusetts, USA, June. meetyourneighbours.net project

Ole Jorgen Liodden / Black-legged Kittiwake (Rissa tridactyla) taking off from water. Spitsbergen, Svalbard, August.

Michael Durham / Red-legged Frog (Rana aurora) near Circle Creek along coast, Oregon

Sebastian Kennerknecht / Burrowing Owl (Athene cunicularia) at burrow, Berkeley, San Francisco Bay, California

Pete Oxford / Red-legged Seriema (Cariama cristata) threat display, Brazil

Heidi & Hans-Juergen Koch / Cayenne Slender-legged Tree Frog (Osteocephalus leprieurii) completely developed young frog sitting in shallow water, native to South America

Mark Moffett / Black-legged Poison Dart Frog (Phyllobates bicolor) portrait, Colombia

Eric Sohn Joo Tan/ BIA / Scaly-breasted Partridge (Arborophila chloropus), Bidoup Nui Ba National Park, Vietnam

Oscar Dewhurst / Black-legged kittiwake (Rissa tridactyla) juveniles, including one caught in netting intalled on buildings to prevent the kittiwakes from nesting there. Newcastle, UK. July

Oscar Dewhurst / Black-legged kittiwake (Rissa tridactyla) adults and chicks. Also visible is the netting installed as a deterrent to kittiwakes breeding on the buildings. One chick has slipped through the netting, so...

Piotr Naskrecki / Banded-legged Golden Orb-web Spider (Nephila senegalensis), Gorongosa National Park, Mozambique

Sylvain Cordier / Red partridge (Alectoris rufa) Castilla La Mancha, Spain.

Sylvain Cordier / Red partridge (Alectoris rufa) Castilla La Mancha, Spain.

Sylvain Cordier / Red partridge (Alectoris rufa) Castilla La Mancha, Spain.

Chien Lee / Asian Brown Tortoise (Manouria emys) male in rainforest, Tawau Hills Park, Sabah, Malaysia

Chien Lee / Blue-legged Chameleon (Calumma crypticum), Ranomafana National Park, Madagascar

Chien Lee / Blue-legged Mantella (Mantella expectata), Isalo National Park, Madagascar

Michael Milicia/ BIA / Black-legged Kittiwake (Rissa tridactyla) pair on nest, Grimsey Island, Iceland

Nick Saunders/ BIA / Burrowing Owl (Athene cunicularia), Saskatchewan, Canada

Philippe Clement / Kittiwakes (Rissa tridactyla) nesting on rock ledges on a sea cliff, one preening, Fowlsheugh RSPB Reserve, Aberdeenshire, Scotland, UK, May

Glenn Bartley/ BIA / Red-legged Seriema (Cariama cristata) calling, Atlantic Rainforest, Brazil

Andres M. Dominguez/ BIA / Red-legged Partridge (Alectoris rufa) female, Andalusia, Spain

Glenn Bartley/ BIA / Dusky-legged Guan (Penelope obscura), Atlantic Rainforest, Brazil

Paul Bertner / Blue-legged Chameleon (Calumma crypticum) female, Ranomafana National Park, Madagascar

Paul Bertner / Long-legged Fly (Dolichopodidae), Nyungwe Forest, Rwanda

Thomas Marent / Burrowing Owl (Athene cunicularia), Los Llanos, Colombia

Thomas Marent / Burrowing Owl (Athene cunicularia), Los Llanos, Colombia

Thomas Marent / Burrowing Owl (Athene cunicularia), Los Llanos, Colombia

Thomas Marent / Burrowing Owl (Athene cunicularia), Los Llanos, Colombia

Thomas Marent / Burrowing Owl (Athene cunicularia), Los Llanos, Colombia

Andres M. Dominguez/ BIA / Red-legged Partridge (Alectoris rufa) male, Cadiz, Spain

Scott Leslie / Black-legged Kittiwake (Rissa tridactyla) juvenile flying, Cape St. Mary's Ecological Reserve, Newfoundland and Labrador, Canada

Marie Read / Eared grebes (Podiceps nigricollis), pair, one adult with food (damselfly) for chick riding on the other adult's back, Bowdoin National Wildlife Refuge, Montana, USA

Tim Zurowski/ BIA / Red-legged Honeycreeper (Cyanerpes cyaneus) male, Costa Rica

Tim Zurowski/ BIA / Red-legged Honeycreeper (Cyanerpes cyaneus) male, Costa Rica

Tim Zurowski/ BIA / Red-legged Honeycreeper (Cyanerpes cyaneus) male, Costa Rica

Tim Zurowski/ BIA / Red-legged Honeycreeper (Cyanerpes cyaneus) male, Costa Rica

Chien Lee / Short-legged Ground-Roller (Brachypteracias leptosomus), Mantadia National Park, Madagascar

Cyril Ruoso / Manaus Slender-legged Treefrog (Osteocephalus taurinus) in rainforest, Pacaya Samiria National Park, Peru

Cyril Ruoso / Manaus Slender-legged Treefrog (Osteocephalus taurinus) in rainforest, Pacaya Samiria National Park, Peru

Donald M. Jones / Burrowing Owl (Athene cunicularia) owlet yawning, central Montana

Donald M. Jones / Burrowing Owl (Athene cunicularia) owlet stretching, central Montana

Donald M. Jones / Burrowing Owl (Athene cunicularia) owlet flapping wings, central Montana

Glenn Bartley / Red-legged Honeycreeper (Cyanerpes cyaneus) female, Costa Rica

Volker Hesse / Black-legged Kittiwake (Rissa tridactyla) juvenile flying, Varanger, Norway

Sean Crane / Burrowing Owl (Athene cunicularia) perching on a termite mound, Piaui State, Brazil

Sean Crane / Burrowing Owl (Athene cunicularia) perching on a termite mound, Piaui State, Brazil

Sean Crane / Capybara (Hydrochoerus hydrochaeris) with a Pale-legged Hornero (Furnarius leucopus) on its head, Brazil

Sean Crane / Burrowing Owl (Athene cunicularia), Brazil

Sean Crane / Manaus Slender-legged Treefrog (Osteocephalus taurinus) sitting on a leaf, Madidi National Park, Bolivia

Piotr Naskrecki / Banded-legged Golden Orb-web Spider (Nephila senegalensis) in web, Gorongosa National Park, Mozambique

Winfried Wisniewski / Black-legged Kittiwake (Rissa tridactyla) calling while flying, Varanger Peninsula, Norway

Jussi Murtosaari / Black-legged Kittiwake (Rissa tridactyla) adults lined up on concerete wall with one calling, Norway

Bob Steele / Scaly-breasted Partridge (Arborophila chloropus), Kaeng Krachan, Thailand

Ralph Martin / Yellow-legged Gull (Larus michahellis), Bavaria, Germany

Ralph Martin / Yellow-legged Gull (Larus michahellis) juvenile, Baden-Wurttemberg, Germany

Robert Royse / Black-legged Kittiwake (Rissa tridactyla), Alaska

E.J. Peiker / Red-legged Honeycreeper (Cyanerpes cyaneus) male, Costa Rica

E.J. Peiker / Red-legged Honeycreeper (Cyanerpes cyaneus) female, Costa Rica

Oscar Diez / Red-legged Partridge (Alectoris rufa), Castile-La Mancha, Spain

Jacob S. Spendelow / Black-legged Kittiwake (Rissa tridactyla), Alaska

Jacob S. Spendelow / Red-legged Kittiwake (Rissa brevirostris), Alaska

Ralph Martin / Red-legged Partridge (Alectoris rufa), Spain

Ralph Martin / Red-legged Partridge (Alectoris rufa), Mallorca, Spain

Jan Wegener / Burrowing Owl (Athene cunicularia), Florida

Christine Jung / Long-legged Buzzard (Buteo rufinus), Boumalne Dades, Morocco

Rosl Roessner / Burrowing Owl (Athene cunicularia) eating a snake, Florida

Rosl Roessner / Burrowing Owl (Athene cunicularia), Florida

Michael Durham / Long-legged Myotis (Myotis volans) leaving cave, Pond Cave, Craters of the Moon National Monument, Idaho

Cyril Ruoso / Black-legged Kittiwake (Rissa tridactyla) flying, Latrabjarg Cliff, West Fjords, Iceland

Cyril Ruoso / Black-legged Kittiwake (Rissa tridactyla) flying, Latrabjarg Cliff, West Fjords, Iceland

Cyril Ruoso / Black-legged Kittiwake (Rissa tridactyla) flying with nest material, Latrabjarg Cliff, West Fjords, Iceland

Cyril Ruoso / Black-legged Kittiwake (Rissa tridactyla) female grooming, Latrabjarg Cliff, West Fjords, Iceland

Cyril Ruoso / Black-legged Kittiwake (Rissa tridactyla) preening, Latrabjarg Cliff, West Fjords, Iceland

Cyril Ruoso / Black-legged Kittiwake (Rissa tridactyla) preening, Latrabjarg Cliff, West Fjords, Iceland

Cyril Ruoso / Black-legged Kittiwake (Rissa tridactyla) flying, Latrabjarg Cliff, West Fjords, Iceland

Cyril Ruoso / Black-legged Kittiwake (Rissa tridactyla) flying with seaweed as nest material, Flatey Island, Iceland

Suzi Eszterhas / Red-legged Honeycreeper (Cyanerpes cyaneus) female, northern Costa Rica

Suzi Eszterhas / Red-legged Honeycreeper (Cyanerpes cyaneus) immature male, northern Costa Rica

Suzi Eszterhas / Red-legged Honeycreeper (Cyanerpes cyaneus) female, northern Costa Rica