David Kjaer / Griffon vulture (Gyps fulvus) coming in to land, Spain, July

David Kjaer / Bearded vulture (Gypaetus barbatus)) coming in to land, Spain, July

David Kjaer / Great bustard (Otis tarda) chicks hatched from eggs collected under licence from the Castilla-La Mancha region of Spain.

David Kjaer / Duke of Burgundy butterfly (Hamearis lucina), Wiltshire, UK, June.

David Kjaer,David Kjaer / Great Bustard (Otis tarda) adult male breeding plumage in full spring display, on Salisbury Plain, part of a reintroduction project with birds imported under DEFRA licence from Russia. Salisbury Plain...

David Kjaer / Flock of Common Starling (Sturnus vulgaris) gathering before landing at winter roost, Salisbury Plain, Wiltshire, UK, January

David Kjaer / Cuckoo (Cuculus canorus) perched in tree. Buckinghamshire, UK, June.

David Kjaer / Common Dormouse (Muscardinus avellanarius) sleeping on leaves. Bentley Wood, Wiltshire, May.

David Kjaer / Portrait of a Red Fox (Vulpes vulpes) in a frosty field. Buckinghamshire, UK, December.

David Kjaer / Harvest Mouse ( Micromys minutus) feeding on ear of wheat, Captive, UK, August

David Kjaer / Red Kite (Milvus milvus) diving towards prey whilst in flight, Wales, UK, March.

David Kjaer / Pearl-bordered Fritillary butterfly (Boloria euphrosyne) at rest on Bracken with wings open, Bentley Wood, Wiltshire, England, UK

David Kjaer / Pearl-bordered Fritillary butterfly (Boloria euphrosyne) at rest on Bracken with wings closed, Bentley Wood, Wiltshire, England, UK

David Kjaer / Lapwings (Vanellus vanellus) flock in flight, Gloucestershire, England, UK. February

David Kjaer / Four Coot (Fulica atra) chicks, perched on exposed surface, surrounded by water, Wiltshire, England, UK. May.

David Kjaer / Pair of Northern pintail ducks (Anas acuta) in flight, Gloucestershire, England

David Kjaer / Flock of Blue tits (Parus caeruleus) and Great tit (Parus major) on Niger seed feeder, Gloucestershire, England

David Kjaer / Small flock of Bewick's / Tundra swans (Cygnus columbianus) on water, in snow covered landscape, Gloucestershire, England

David Kjaer / Male American robin (Turdus migratorius) puffed up to keep warm, and perched on Juniper branch, Kentucky, USA

David Kjaer / Male Twite (Carduelis flavirostris) perched on gorse, North Uist, Outer Hebrides, Scotland, May

David Kjaer / Sand martin (Riparia riparia) juvenile at entrance to nest burrow, Worcesrtershire, England, July

David Kjaer / Sand martin (Riparia riparia) adult and juveniles at entrance to nest burrows, Worcestershire, England, July

David Kjaer / Red fox (Vulpes vulpes) cub in Bluebells, Oxfordshire, England, May

David Kjaer / Seabird breeding cliffs, northern end of Handa Island, off the north west coast of Scotland, June.

David Kjaer / Eagle owl (Bubo bubo) flying low over grassland, captive, UK.

David Kjaer / Barn owl (Tyto alba) in flight over reeds, captive, UK

David Kjaer / Two Goldfinch (Carduelis carduelis) perched on lichen covered branch, Gloucestershire, England.

David Kjaer / Chiffchaff (Phylloscopus collybita) in spring. Wiltshire, England.

David Kjaer / Whooper swan (Cygnus cygnus) pair at sunset on the Ouze Washes, Norfolk, England

David Kjaer / Stonehenge at sunrise on the 21st September, the autumn equinox, Wiltshire, UK

David Kjaer / Mexican Free-tailed Bat (Tadarida brasiliensis mexicana) emerging at dusk from Frio Cave, near Concan in the Texas Hill Country, Texas, USA.

David Kjaer / Robin (Erithacus rubecula) singing in spring, Gloucestershire, England

David Kjaer / Dunlin (Calidris alpina), winter flock in flight (approx 100), Gloucestershire, England

David Kjaer / Fallow Deer ( Dama dama) bucks or males at sunrise on a misty morning in Richmond Park, London, England

David Kjaer / Fallow Deer (Dama dama) bucks or males fighting during autumn 'rut' in Richmond Park, London, England

David Kjaer / Fallow Deer (Dama dama) young buck and male running during autumn 'rut' in Richmond Park, London, England

David Kjaer / Red-legged Partridge (Alectoris rufa) Wiltshire, England

David Kjaer / Snowdrops {Galanthus nivalis} and Scarlet elf cup fungus {Sarcoscypha austriaca} in woodland, UK

David Kjaer / Flock of Cormorant (Phalacrocorax carbo) leaving roost, Poland

David Kjaer / Flock of Common Crane (Grus grus) flying over wind turbines on migration in Poland. Wind farm.

David Kjaer / Yellow-legged Gull (Larus cachinnans) & two Juvenile Herring Gull (Larus argentatus) catching fish and fighting, Poland

David Kjaer / Water Vole (Arvicola terrestris) emerging from burrow on muddy river bank, Wiltshire, England

David Kjaer / Water Vole (Arvicola terrestris) on muddy river bank near burrow, Wiltshire, England

David Kjaer / Red Kites (Milvus milvus) in flight, fighting over food, Wales

David Kjaer / Water Vole (Arvicola terrestris) emerging from burrow on muddy river bank, Wiltshire, England

David Kjaer / Common Kingfisher (Alcedo atthis) pair mating, Buckinghamshire, England

David Kjaer / Curious domestic cattle {Bos taurus} approaching the photographer, Somerset, UK

David Kjaer / Reed warbler (Acrocephalus scirpaceus) with large fledgling Cuckoo (Cuculus canorus) in it's nest, Essex, UK

David Kjaer / Female Pied flycatcher (Ficedula hypoleuca) with insects in beak on flowering hawthorn, spring, Wales UK

David Kjaer / Two Rooks flying {Corvus frugilegus} UK

David Kjaer / Stonechat {Saxicola rubicola} Male in winter, Wiltshire, UK

David Kjaer / Male Bullfinch {Pyrrhula pyrrhula} perching in Pussy Willow (Salix) , Yorkshire, UK.

David Kjaer / Double rainbow, viewed from Spread Eagle, Dorset, England

David Kjaer / Chacoan / Ornate Horned Frog {Ceratophrys cranwelli} Captive

David Kjaer / Red eyed tree frog {Agalychnis callidryas} perching on leaf, Captive.

David Kjaer / Harvest Mouse {Micromys minutus} climbing between wheat-ears, Captive, Europe.

David Kjaer / Female Red footed falcon {Falco vespertinus} Lesbos, Greece

David Kjaer / Common Wasps on nest {Vespula vulgaris} Wiltshire, UK

David Kjaer / Female Rock ptarmigan, in winter plumage camouflaged against snow (Lagopus mutus) Cairngorms, Scotland

David Kjaer / Bullfinch male {Pyrrhula pyrrhula} with Pussy willow catkins (Salix) Yorkshire, UK

David Kjaer / Northern gannet breeding colony {Morus bassanus} Bass Rock, Scotland, UK

David Kjaer / Man standing next to Giant sequoia tree {Sequoiadendron giganteum} Sequoia National Park, USA

David Kjaer / Starlings flying to roost at sunset, UK (Sturnus vulgaris)

David Kjaer / Silver washed fritillary {Argynnis paphia} on flower. UK.

David Kjaer / Common starlings flying to roost {Sturnus vulgaris} sunset, Gloucestershire, England

David Kjaer / American Alligator female carrying baby on head. Texas, USA

David Kjaer / Bewick swan {Cygnus columbianus columbianus} in flight. UK.

David Kjaer / Willow tit {Poecile montanus} perching on snow-covered Pine. Finland.

David Kjaer / Two Bewick swans {Cygnus columbianus bewickii} flying with full-moon in sky. UK.

David Kjaer / Black skimmers {Rynchops nigra} Texas, USA

David Kjaer / Black tailed jack rabbit {Lepus californicus} Arizona, USA

David Kjaer / Red fox females fighting {Vulpes vulpes} captive England

David Kjaer / Hoverfly at flower, England

David Kjaer / Brimstone butterfly on Pussy willow catkins, UK

David Kjaer / Juvenile European cuckoo {Cuculus canorus} fed by Reed warbler {Acrocephalus scirpaceus}. Bucks, UK. Cuckoos lay their eggs in the nests of reed warblers and when they hatch, the warbler mother will a...

David Kjaer / Common starlings returning at dusk to roost {Sturnus vulgaris} Gloucestershire, UK

David Kjaer / Two Greylag geese landing at sunset {Anser anser} UK

David Kjaer / Bewick's swans, silhouette of four flying after sunset {Cygnus bewickii} UK

David Kjaer / Greylag geese courtship display (Anser anser) Gloucestershire UK

David Kjaer / Ptarmigan {Lagopus mutus} male in winter plumage Cairngorms, Scotland, UK Europe

David Kjaer / Female Rock ptarmigan in snow. Scotland Caingorms UK Europe

David Kjaer / Rock ptarmigan pair in snow. Scotland Caingorms UK Europe

David Kjaer / Red grouse female in heather Deeside, Scotland

David Kjaer / Red grouse female in heather Deeside, Scotland (Lagopus lagopus scoticus)

David Kjaer / White tailed sea eagle {Haliaeetus albicilla} fishing, off Isle of Skye, Scotland. Sequence 2/3

David Kjaer / White tailed sea eagle catching fish {Haliaeetus albicilla} Skye, Scotland, UK

David Kjaer / Shelduck (Tadorna tadorna). UK, Europe

David Kjaer / Red kite (Milvus milvus) in flight. Wales, UK, Europe

David Kjaer / Red kite (Milvus milvus) in flight. Wales, UK, Europe

David Kjaer / Little owl perched {Athene noctua} UK

David Kjaer / Long eared owl {Asio otus} UK

David Kjaer / White tailed sea eagle feeds on rabbit {Haliaeetus albicilla} UK

David Kjaer / Female Merlin perched on rock. North Yorkshire, UK

David Kjaer / Male Sparrowhawk at water. Sussex, UK

David Kjaer / Female Sparrowhawk feeds chicks in nest. UK

David Kjaer / Female Sparrowhawk with chicks in nest. (Accipiter nisus) UK