Mike Read / White stork (Ciconia ciconia) pair silhouetted on nest at sunset near Castro Verde, Alentejo, Portugal, February.

Mike Wilkes / Carrion crows (Corvus corone) harassing Buzzard (Buteo buteo) trying to steal its prey, Warwickshire, England, UK, March

Mike Wilkes / Burchell's zebra (Equus quagga burchellii) walking in single file, Ngorongoro Crater,Tanzania

Mike Potts / Fish drying on racks, Varangerfjord, Norway, March 2013.

MIKE POTTS,Mike Potts / Stellers Eider (Polysticta stelleri) a small group in flight, near Vardo. North Norway, March.

Michael Pitts / Mike de Gruy, underwater camerman, in Remora submersible, Mediterranean

Mike Potts / Echidna Gorge - the sun only gets into this very narrow slot canyon at midday, part of the Purnululu National Park (Bungle Bungles), Kimberly Region, Western Australia, July 2011

Mike Wilkes / Snipe (Gallinago gallinago) probing for worms, Warwickshire, UK, February

Mike Read / Cranes (Grus grus), imprinted from hatching to fly with a microlight. Hampshire County Show near Brockenhurst, Hampshire, England, July 2008.

Mike Read / Coastal farmland near Rosais. Sao Jorge, Azores, September 2004.

Mike Read / Gentoo penguin (Pygoscelis papua) standing on a sandy beach, Falkland Islands

Mike Read / Magellanic oystercatcher (Haematopus leucopodus) Falkland Islands

Mike Read / Magellanic penguin (Spheniscus magellanicus) calling, Falkland Islands

Mike Potts / Atlantic salmon (Salmo salar) moving upriver to spawn. Lligwy River nr Betws y Coed, Gwynedd, North Wales, UK, November

Mike Potts / Atlantic salmon (Salmo salar) moving upriver to spawn. Lligwy River nr Betws y Coed, Gwynedd, North Wales, UK, November

Mike Potts / Mendenhall Glacier in severe retreat, with blue ice indicating where the glacier has recently calved. Juneau Alaska USA, May 2010

Mike Wilkes / Moorhen {Gallinula chloropus} tracks in snow, UK

Mike Potts / Bottlenose dolphin (Tursiops truncatus) surfacing, off the Lleyn Peninsula, North Wales, UK. May 2010

Mike Potts / Bottlenose dolphin (Tursiops truncatus) surfacing, off the Lleyn Peninsula, North Wales, UK. May 2010

Mike Potts / Bottlenose dolphin (Tursiops truncatus) surfacing, off the Lleyn Peninsula, North Wales, UK. May 2010

Neil Lucas / Cameraman Mike Pitts, diving for BBC Filming 'Life' The Bahamas, Caribbean, February 2007, Model released

Mike Potts / Wild goats (Capra hircus) resting on coastal promontory, one yawning, Great Orme, Llandudno, Gwynedd, North Wales, UK, August

Mike Wilkes / Great spotted woodpecker (Dendrocopos major) pecking at bark, searching for bugs under the bark, Warwickshire, UK

Mike Read / Male Great spotted woodpecker (Dendrocopos major) on branch, near Ringwood, Hampshire, England, February

Mike Read / Eurasian wigeon (Anas penelope) two males and two females on shallow water, Catcott Lows, Somerset, England, February

Mike Read / Eurasian treecreeper (Certhia familiaris) on Ivy (Hedera helix) growing on English / Pendunculate oak (Quercus robur) tree, Hampshire, England, March

Mike Wilkes / Jay (Garrulus glandarius) feeding on acorn, Warwickshire, UK

Mike Potts / New Zealand albatross (Diomedea antipodensis) on water off Kaikoura coast, South Island, New Zealand.

Mike Potts / Pintail ducks (Anas acuta), Four males courting one female, Martin Mere, Lancashire, UK February

Mike Potts / Eurasian Widgeon (Anas penelope) flock take flight from grazing area, Llanfairfechan, Gwynedd, North Wales, UK February

Mike Wilkes / Tree sparrows {Passer montanus} perching on Bramble, Warwickshire, UK

Mike Potts / Red Grouse {Lagopus lagopus scoticus} flying over Yorkshire Dales National Park, UK

Georgette Douwma / "Seatrek" programme presenters Martha Holmes and Mike de Gruy feeding Butterflyfish off Hawaii, 1991 - BBC NHU television series

Mike Wilkes / Great spotted woodpecker {Dendrocopos major} female, Warwickshire, UK.

Mike Wilkes / Song thrush {Turdus philomelos} breaking snail shell on anvil, St. Marys, Isles of Scilly, UK.

Mike Wilkes / Song thrush {Turdus philomelos} with snail shell, St. Marys, Isles of Scilly, UK.

Mike Wilkes / Oystercatcher at nest, Islay, Scotland {Haematopus ostralegus}

Mike Wilkes / Head portrait of American crocodile {Crocodylus acutus} Florida, USA

Mike Wilkes / Caspian terrapin with young {Mauremys caspica} Lesbos, Greec

Mike Wilkes / Exmoor pony mare {Equus caballus} and foal suckling. Exmoor National Park, UK.

Mike Wilkes / Tree sparrow {Passer montanus} on garden nut feeder. Warwickshire, UK.

Mike Wilkes / Exmoor pony with foal {Equus caballus} Exmoor National Park, Devon, UK

Mike Wilkes / Giant ground pangolin curled up (Manis gigantea) Tanzania.

Mike Wilkes / Albino white Reindeer in June (Rangifer tarandus) Sweden

Mike Wilkes / Exmoor ponies, mares and foals, grazing {Equus caballus} July, England, UK

Mike Wilkes / Wood pigeon drinking {Columba palumbus} Worcestershire UK

Mike Potts / Arctic fox cubs play near den {Vulpes lagopus} Svalbard, Norway

Mike Potts / Polar bear skins drying {Ursus maritimus} Little Diomede Is, Alaska, USA

Mike Potts / Large colony of Walrus {Odobenus rosmarus} beached at Round Island, Alaska.

Mike Wilkes / Red deer stag {Cervus elaphus} roaring during the rutting season, UK.

Mike Wilkes / Woman and child cleaning fish, The Gambia

Mike Wilkes / Dunnock {Prunella modularis} UK

Mike Potts / Male fiddler crab {Uca sp}. Queensland, Australia.

Mike Wilkes / Dartmoor pony {Equus caballus} Dartmoor NP, Devon, UK

Mike Wilkes / Brown rat with blackbird prey {Rattus norvegicus} Worcestershire, UK February

Mike Wilkes / Green Woodpeckers feeding young at nest in tree, UK

Mike Wilkes / Three Greater flamingos {Phoenicopterus ruber} Serengeti NP, Tanzania

Mike Parry / Dugong (Dugong dugon), Lamen Bay, Epi Island, Vanuatu

Mike Parry / Great White Shark (Carcharodon carcharias) breaking surface of water to feed, Neptune Islands, South Australia

Mike Parry / Great White Shark (Carcharodon carcharias) breaking surface of water to feed, Neptune Islands, South Australia

Mike Parry / Great White Shark (Carcharodon carcharias) breaking surface of water to feed, Neptune Islands, South Australia

Mike Parry / Humpback Whale (Megaptera novaeangliae) swimming, Tonga

Mike Parry / Humpback Whale (Megaptera novaeangliae) mother and calf, Tonga

Mike Parry / Saltwater Crocodile (Crocodylus porosus) juvenile, New Britain Island, Papua New Guinea

Mike Parry / Leatherback Sea Turtle (Dermochelys coriacea) on land, Huon Gulf, Papua New Guinea, critically endangered

Mike Parry / Southern Bluefin Tuna (Thunnus maccoyii) school underwater, South Australia

Mike Parry / Saltwater Crocodile (Crocodylus porosus) underwater, South Australia.

Mike Parry / Great White Shark (Carcharodon carcharias) at surface, South Australia

Mike Parry / Great White Shark (Carcharodon carcharias) swimming underwater, Neptune Islands, Australia. Digitally enhanced

Mike Parry / Great White Shark (Carcharodon carcharias), Neptune Islands, Australia

Mike Parry / Great White Shark (Carcharodon carcharias) swimming underwater, Neptune Islands, South Australia

Mike Parry / Great White Shark (Carcharodon carcharias) swimming underwater, Neptune Islands, South Australia

Mike Parry / Great White Shark (Carcharodon carcharias) side view of face, Neptune Islands South Australia

Mike Parry / Great White Shark (Carcharodon carcharias) swimming through a school of fish, Neptune Islands, South Australia

Mike Parry / Great White Shark (Carcharodon carcharias) swimming through school of fish, Neptune Islands, Australia

Mike Parry / Leatherback Sea Turtle (Dermochelys coriacea) underwater view of swimming hatchling, Huon Gulf, Papua New Guinea

Mike Parry / Leatherback Sea Turtle (Dermochelys coriacea) hatchling trio entering sea, Huon Gulf, Papua New Guinea

Mike Parry / Southern Bluefin Tuna (Thunnus maccoyii) underwater, South Australia

Mike Parry / Great White Shark (Carcharodon carcharias) open jaw, Neptune Islands, South Australia

Mike Parry / Southern Right Whale (Eubalaena australis) with callosities on head and chin, Western Australia

Mike Parry / Saltwater Crocodile (Crocodylus porosus) swimming, Oro Bay, Papua New Guinea

Mark Moffett / Giant Weta (Deinacrida heteracantha) female held by researcher Mike Meades, this largest Weta species is found only on Little Barrier Island, New Zealand Weta in hand, New Zealand

Mark Moffett / Giant Weta (Deinacrida heteracantha) female being fed a carrot by researcher Mike Meades, Little Barrier Island, New Zealand

Mike Wilkes / Little grebe on nest, England

Mike Wilkes / Greylag goose flying, Slimbridge WWT England, UK

Mike Wilkes / Rock ptarmigan (Lagopus mutus). Aviemore, Scotland, UK, Europe

Mike Wilkes / Grey partridge calling, England

Mike Wilkes / Pheasant cock calling, England

Mike Wilkes / Five thrush species feeding at fallen fruit in snow, England UK. Clockwise from top: Fieldfare {Turdus pilaris} Song thrush {T. philomelos) Blackbird {T. merula} Redwing {T. iliacus} Mistle thrush {Tu...

Mike Wilkes / Rookery with nests at top of trees {Corvus frugilegus} Warwickshire, UK

Mike Potts / Whooper swans feeding on winter wheat {Cygnus cygnus} Ouse washes, Cambridgeshire, UK

Mike Read / Monte Padru (2390m) + Corsican pine woodland, Parc Naturel Regional de Corse, Corsica

Mike Potts / Mer de Glace glacier, Mont Blanc, Alps, France

Mike Read / Barn owl with wood mouse prey entering barn {Tyto alba} UK

Mike Wilkes / Great Crested Grebe on nest in water. England

Mike Read / Barn owl, darker continental form {Tyto alba} captive UK