Mats Forsberg / Ringed seal pup suckling {Phoca hispida} Svalbard, Norway

Bjorn Forsberg / Northern goshawk perched in snow {Accipiter gentilis} Sweden

Bjorn Forsberg / Lupins {Lupinus nootkatensis} in flower by birch tree trunk, Sweden, summer, Scandinavia

Mats Forsberg / Polar bear stalking ringed seal pup. Svalbard, Norway.

Mats Forsberg / Polar Bear tracks in snow, Svalbard , Norway

Mats Forsberg / Snow covered mountain range Svalbard, Spitzbergen, Norway, Scandinavia, Europe

Bjorn Forsberg / Cuckoo flower {Cardamine pratensis} Sweden

Bjorn Forsberg / Wood cranesbill, (Geranium sylvaticum) Karlskoga Sweden.

Bjorn Forsberg / Wood cranesbill (Geranium sylvaticum) Karlskoga Sweden. June.

Bjorn Forsberg / Mazarine blue butterfly (Polyommatus semiargus) on buttercup, Karlskoga, Sweden. June.

Bjorn Forsberg / Fieldfare (Turdus pilaris) on branch with berries, Karlskoga, Sweden. January.

Bjorn Forsberg / European Barn Swallow (Hirundo rustica) Oland Sweden, May

Bjorn Forsberg / White wagtail (Motacilla alba alba) perched, Karlskoga, Sweden, May

Bjorn Forsberg / Little Ringed Plover (Charadrius dubius) adult with chicks. Sweden, Europe, June.

Bjorn Forsberg / Little Ringed Plover (Charadrius dubius) adult with two chicks. Sweden, Europe, June.

Bjorn Forsberg / Portrait of a Little Ringed Plover (Charadrius dubius). Sweden, Europe, June.

Bjorn Forsberg / Blackbird (Turdus merula) male perched on a twig and calling. Sweden, Europe, May.

Bjorn Forsberg / Portrait of a Little Ringed Plover (Charadrius dubius). Sweden, Europe, June.

Bjorn Forsberg / Canada Goose (Branta canadensis) stretching its wings. Sweden, Europe, February.

Bjorn Forsberg / Little Ringed Plover (Charadrius dubius) chick with a small spider in its beak. Sweden, Europe, June.

Bjorn Forsberg / Two Canada Geese (Branta canadensis) calling in unison. Sweden, Europe, February.

Bjorn Forsberg / Canada Goose (Branta canadensis) calling with its head tipped back. Sweden, Europe, February.

Bjorn Forsberg / Scarlet rosefinch singing {Carpodacus erythrinus} Sweden

Mats Forsberg / Martin Saunders filming Polar bears feeding, Svalbard, Norway, on location for BBC NHU 'Blue Planet' April 1996

Mats Forsberg / BBC NHU film crew travelling by snow mobile in search of Polar bears, on location for 'Blue planet', Svalbard, Norway, April 1996

Mats Forsberg / Film crew at the Texas bar hut, Svalbard, Norway, on location for BBC NHU 'Blue Planet' April 1997

Bjorn Forsberg / Redcurrant berries {Ribes rubrum} Sweden

Mats Forsberg / Ringed seal {Phoca hispida} pup on ice, Svalbard, Norway

Bjorn Forsberg / Cherries on Cherry tree {Prunus cerasus} Sweden

Bjorn Forsberg / Black sampson flower {Echinacea purpurea} Sweden

Bjorn Forsberg / Creeping thistle {Cirsium arvense}, blackfly and other flying insects, Sweden

Bjorn Forsberg / English oak tree in winter {Quercus robur} Sweden

Bjorn Forsberg / Common cranes {Grus grus} flying against sunset, Sweden

Bjorn Forsberg / Mass of caterpillar larvae of Ermine moth {Yponomeuta evonymella} Sweden

Mats Forsberg / Cameraman Martin Saunders filming at ice hole for BBC 'Kingdom of the Ice Bear', April 1996, Leifdefj, Svalbard, Norway

Bjorn Forsberg / Redcurrants on bush {Ribes rubrum} Red cross variety, Sweden

Bjorn Forsberg / Skylark at nest with chicks (Alauda arvensis) Sweden

Mats Forsberg / Producer Martha Holmes and cameraman Martin Saunders inside Texas Bar hut, Svalbard, Norway, on location for Polar Bear film special, 1996

Mats Forsberg / Film crew for BBC 'Kingdom of the Ice Bear' on their way to Leifdefj, Svalbard, Norway, April 1996

Mats Forsberg / Doug Allan in Kvalvagon hut on location for BBC 'Kingdom of the Ice Bear', April 1996, Svalbard, Norway

Mats Forsberg / 'Texas bar hut' used by film crew on location for BBC 'Kingdom of the Ice Bear', April 1996, Leifdefj, Svalbard, Norway

Bjorn Forsberg / Wren with grasshopper prey (Troglodytes troglodytes) Sweden

Mats Forsberg / Camerman Martin Saunders, looking out of the Texas Bar hut, home for film crew on location for Polar Bear programme, Svalbard, Norway. 1996

Bjorn Forsberg / Sedge warbler in reeds {Acrocephalus schoenobaenus} Sweden

Bjorn Forsberg / Northern goshawk female perched in snow {Accipiter gentilis} Sweden

Mats Forsberg / Snow stained with blood from kill of a Polar Bear, Svalbard, Noway

Bjorn Forsberg / Black tailed godwit nest with four eggs {Limosa limosa} Sweden

Bjorn Forsberg / Domestic chicken in hen run {Gallus gallus domesticus} Sweden

Bjorn Forsberg / Montagu's harrier {Circus pygargus} with reptile prey, Oland, Sweden

Bjorn Forsberg / Red necked grebe {Podiceps grisegna} Oland, Sweden

Bjorn Forsberg / Bohemian waxwing {Bombycilla garrulus} Sweden

Bjorn Forsberg / Red backed shrike {Lanius collurio} Male, Oland, Sweden

Bjorn Forsberg / Linnet {Carduelis / Acanthis cannabina} male, Oland, Sweden

Mats Forsberg / Two Polar Bears crossing landscape {Ursus maritimus} Svalbard, Norway

Bjorn Forsberg / Holiday makers on crowded beach at Vottern Lake, Sweden

Bjorn Forsberg / Portrait of Robin {Erithacus rubecula} Sweden

Mats Forsberg / Aerial looking down onto glacial front, Svalbard, Spitzbergen, Norway

Bjorn Forsberg / Portrait of female Whinchat (Saxicola rubetra) perched on pine, Sweden

Mats Forsberg / Crabeater seal on ice floe. (Loboden carcinophagus)Antarctic

Bjorn Forsberg / Fieldfare sitting on nest {Turdus pilaris} Sweden

Bjorn Forsberg / Song thrush with chicks at nest {Turdus philomelos} Karlskoga, Sweden

Bjorn Forsberg / Black woodpecker male {Dryocopus martius} looking out of nest hole, Stelvio NP, Alps, Italy

Bjorn Forsberg / Black woodpecker {Dryocopus martius} at nest hole with chick begging, Sweden

Bjorn Forsberg / Whinchat female {Saxicola rubetra} Sweden

Bjorn Forsberg / Fieldfare at nest {Turdus pilaris} Sweden

Bjorn Forsberg / Red backed shrike juvenile {Lanius collurio} Sweden

Bjorn Forsberg / Brimstone butterfly {Gonepteryx rhamni} on thistle {Cirsium arvense} Sweden

Bjorn Forsberg / Reed bunting singing on reed {Emberiza schoeniclus} Sweden

Bjorn Forsberg / Willow warbler with insect prey {Phylloscopus trochilus} Sweden

Bjorn Forsberg / Silver studded blue butterfly, male {Plebejus argus} Sweden

Bjorn Forsberg / Black headed gulls mating {Chroicocephalus ridibundus} Sweden

Bjorn Forsberg / Common blue butterfly {Polyommatus icarus} male, Sweden

Mats Forsberg / Leopard seal hauled out on ice floe (Hydrurga leptonyx) Antarctica.

Bjorn Forsberg / Scarce copper butterfly {Lycaena virgaureae} on {Lamium hybridum} Sweden

Bjorn Forsberg / Scarce copper butterfly {Lycaena virgaureae} on Daisies {Leucanthemum vulgare} Sweden

Bjorn Forsberg / Rose bud with Ten spotted ladybird {Cocinellidae propylea gutturodecimpunctata} Sweden

Bjorn Forsberg / Scarce copper butterfly female {Lycaena virgaureae} Sweden

Bjorn Forsberg / Callistephus chinensis flower, Sweden

Bjorn Forsberg / Callistephus chinensis flower bud, Sweden

Bjorn Forsberg / Northern goshawk female perched {Accipiter gentilis} Sweden

Mats Forsberg / Polar bear portrait (Ursus maritimus) Svalbard Norway

Bjorn Forsberg / Montagu's harrier pair courtship display in flight {Circus pygargus} Sweden

Bjorn Forsberg / Montagu's harrier female {Circus pygargus} Sweden

Bjorn Forsberg / Northern goshawk female feeding {Accipiter gentilis} Sweden

Bjorn Forsberg / Sedge warbler in reeds with insect prey {Acrocephalus schoenobaenus} Scandinavia

Mats Forsberg / Polar bear female walking with cubs following, Svalbard, Norway.

Mats Forsberg / Iceberg formation in Svalbard, Leifdefi, Norway, Sandinavia

Mats Forsberg / Weddell seal on ice, Antarctica

Mats Forsberg / Leopard seal (Hydrurga leptonyx) hauled out on ice. Antarctic

Bjorn Forsberg / Female Blackbird carrying nest material {Turdus merula} Sweden

Bjorn Forsberg / Ostrich fern fronds unfurling {Matteuccis struthiopteris} Sweden

Bjorn Forsberg / Silver birch catkins {Betula verrucosa} Sweden

Bjorn Forsberg / Cultivated gooseberries {Ribes uva crispa} Achilles variety. Sweden

Bjorn Forsberg / Cultivated pears Alexander lukas variety {Pyrus communis} Sweden

Bjorn Forsberg / Cultivated apple Ingrid Marie variety {Malus domestica} Sweden

Bjorn Forsberg / Whinchat male with insect prey {Saxicola rubetra} Sweden