An Atlantic walrus-Odobenus rosmarus-resting on the ice Norway by Pitamitz, Sergio

An over-under view of an iceberg Vibebukta-Austfonna-Norway by Pitamitz, Sergio

Atlantic walruses-Odobenus rosmarus-resting on ice Nordaustlandet-Norway by Pitamitz, Sergio

Atlantic walruses-Odobenus rosmarus-in Arctic water Nordaustlandet-Norway by Pitamitz, Sergio

Atlantic walruses-Odobenus rosmarus-in Arctic water Nordaustlandet-Norway by Pitamitz, Sergio

Ice along the southern edge of the Austfonna ice cap Nordaustlandet-Norway by Pitamitz, Sergio

Detail of an iceberg at Austfonna ice cap Nordaustlandet-Norway by Pitamitz, Sergio

Ice floes in the Erik-the strait separating Kong Karls Land from Nordaustlandet-Norway by Pitamitz, Sergio

Svalbard reindeer-Rangifer tarandus-walk along a glacier front Norway by Pitamitz, Sergio

Svalbard reindeer-Rangifer tarandus-walk along a glacier front Norway by Pitamitz, Sergio

Ice floes in the Arctic sea Norway by Pitamitz, Sergio

Ice detail Norway by Pitamitz, Sergio

A black-legged kittiwake-Rissa tridactyla-flies near an iceberg Norway by Pitamitz, Sergio

A Svalbard reindeer-Rangifer tarandus-in snowy tundra Norway by Pitamitz, Sergio

A young European brown bear looking at the camera Notranjska-Slovenia by Pitamitz, Sergio

A young European brown bear walking Notranjska-Slovenia by Pitamitz, Sergio

A European brown bear standing and looking at the camera Notranjska-Slovenia by Pitamitz, Sergio

Portrait of a European brown bear in the Slovenian forest Notranjska-Slovenia by Pitamitz, Sergio

A female European brown bear and her three cubs Notranjska-Slovenia by Pitamitz, Sergio

An Ural owl-perching on a tree branch and looking at the camera Notranjska forest,Slovenia by Pitamitz, Sergio

European brown bear standing and looking at the camera Notranjska forest-Inner Carniola-Slovenia by Pitamitz, Sergio

European brown bear standing and looking at the camera Notranjska forest-Inner Carniola-Slovenia by Pitamitz, Sergio

A European brown bear looks at the camera from behind a tree in Notranjska forest-Slovenia by Pitamitz, Sergio

A European brown bear resting in the forest Notranjska forest-Inner Carniola-Slovenia by Pitamitz, Sergio

USA-Washington State Hood Canal-bald eagle flyby by Archer, Ken

USA-Washington State Hood Canal-Salish Sea-bald eagle flyby by Archer, Ken

USA-Washington State Hood Canal-Salish Sea-bald eagle harassing great blue heron by Archer, Ken

USA-Washington State Hood Canal-Salish Sea-bald eagle alighting by Archer, Ken

Canada-British Columbia-Boundary Bay-bald eagle-winter portrait by Archer, Ken

USA-Yellowstone National Park-Montana-bighorn sheep-wintering herd by Archer, Ken

Black-tailed deer buck by Archer, Ken

Black-tailed deer buck by Archer, Ken

Black-tailed deer buck by Archer, Ken

USA-Southeast Oregon-Malheur National Wildlife Refuge-burrowing owl near nesting burrow by Archer, Ken

Cinnamon teal pair preening by Archer, Ken

Bighorn sheep-curious lambs overlooking the Colorado alpine country-USA by Archer, Ken

Bighorn sheep lambs-curious youngsters of the alpine country, USA-Colorado by Archer, Ken

Bighorn sheep-ewe and lamb resting by Archer, Ken

USA-Oregon-Malheur National Wildlife Refuge-canvasback duck pair by Archer, Ken

Dusky grouse-courtship display-trying to impress a nearby female grouse USA-Colorado by Archer, Ken

Dusky grouse-courtship display by Archer, Ken

Dusky grouse close-up-courtship calling-trying to impress a nearby female grouse, USA-Colorado by Archer, Ken

Dusky grouse-courtship display by Archer, Ken

Dusky grouse courtship display-trying to impress a nearby female grouse USA-Colorado by Archer, Ken

Eared grebe parent giving chicks a ride, USA-Colorado by Archer, Ken

Rocky Mountain bull elk-aspen tree by Archer, Ken

Canada-Alberta-National Park-bull elk-on the move by Archer, Ken

Bull elk silhouette at Yellowstone-Wyoming-USA by Archer, Ken

Rocky Mountain bull elk by Archer, Ken

Colorado bull elk in Autumn mountain meadow-USA by Archer, Ken

USA-Colorado-Rocky Mountain National Park-bull elk confrontation by Archer, Ken

Bull elk with herd of cows by Archer, Ken

Rocky Mountain bull elk by Archer, Ken

Bull elk chasing nearby rival, USA-Colorado-Rocky mountain meadow by Archer, Ken

Gadwall duck flying-Colorado wetlands-USA by Archer, Ken

USA-Yellowstone-National Park-Wyoming-great gray owl-spring time hunting perch by Archer, Ken

USA-Yellowstone National Park-Wyoming-great gray owl-spring time hunting perch by Archer, Ken

USA-Oregon-Malheur National Wildlife Refuge-great horned owl looking back by Archer, Ken

Golden-mantled ground squirrel by Archer, Ken

USA-Idaho-Snake River Canyon-Canada geese pair flying by Archer, Ken

Grizzly bear (sow) by Archer, Ken

USA-Washington State National Wildlife Refuge-mallard drake drying wings by Archer, Ken

USA-Washington State Nisqually National Wildlife Refuge-mallard drake flying by Archer, Ken

USA-Washington State Nisqually National Wildlife Refuge-mallard drake flying by Archer, Ken

USA-Washington State Nisqually National Wildlife Refuge-mallard drake flying by Archer, Ken

USA-Washington State Nisqually National Wildlife Refuge-mallard drake flying by Archer, Ken

USA-Washington State Nisqually National Wildlife Refuge-mallard hen in flight by Archer, Ken

Mallard drake flying by Archer, Ken

USA-Washington State Nisqually National Wildlife Refuge-mallard drake-autumn flight by Archer, Ken

Alert mule deer buck resting-Montana-USA by Archer, Ken

Alert mule deer buck and doe-Montana-USA by Archer, Ken

Alert mule deer buck resting Montana-USA by Archer, Ken

Mountain Goat Adult Greets Youngster by Archer, Ken

USA-California-Klamath Basin National Wildlife Refuge-flock of ducks at last light by Archer, Ken

Canada-British Columbia-Boundary Bay-Northern harrier (male) by Archer, Ken

Musk ox-Arctic tundra by Archer, Ken

Northern pintail duck-foraging in flooded agriculture field-migration stop-USA-Oregon by Archer, Ken

Northern pintail drake-foraging in flooded farmers field-USA-Oregon by Archer, Ken

Northern pintail duck-foraging in flooded agriculture field-migration stop-USA-Washington by Archer, Ken

Northern pintail ducks-foraging in flooded agriculture field-migration stop-USA-Oregon by Archer, Ken

Northern pintail ducks-spring migration-USA-Washington State by Archer, Ken

Young red fox hunting by Archer, Ken

USA-Washington State San Juan Islands-red fox-adults playing by Archer, Ken

USA-Washington State San Juan Islands-red fox kits playing by Archer, Ken

Rocky Mountain bull elk by Archer, Ken

Cow elk with twin calves-Canadian Rockies-Alberta-Canada by Archer, Ken

Roosevelt elk resting in the rainforest-Olympic Peninsula-Washington State-USA by Archer, Ken

Young Roosevelt bull elk-rainforest shades of green-Olympic Peninsula-Washington State-USA by Archer, Ken

Roosevelt bull elk-Pacific Northwest rainforest by Archer, Ken

Roosevelt bull elk-Pacific Northwest rainforest by Archer, Ken

Roosevelt bull elk-Pacific Northwest rainforest by Archer, Ken

Roosevelt bull elk-Pacific Northwest rainforest by Archer, Ken

Roosevelt bull elk-USA-Washington State Olympic National Park by Archer, Ken

Roosevelt bull elk-Pacific Northwest rainforest by Archer, Ken

Roosevelt bull elk-Pacific Northwest rainforest by Archer, Ken

Roosevelt elk herd-Pacific Northwest rainforest by Archer, Ken

Roosevelt bull elk-Pacific Northwest rainforest by Archer, Ken

Roosevelt bull elk-Pacific Northwest rainforest by Archer, Ken

Roosevelt bull elk-Pacific Northwest rainforest by Archer, Ken

Roosevelt bull elk-Pacific Northwest rainforest by Archer, Ken

Roosevelt bull elk-Pacific Northwest rainforest by Archer, Ken

Roosevelt bull elk-Pacific Northwest rainforest by Archer, Ken

Roosevelt bull elk-USA-Washington State Olympic National Park by Archer, Ken

Roosevelt bull elk-Pacific Northwest rainforest by Archer, Ken

Roosevelt bull elk-Pacific Northwest rainforest by Archer, Ken

Roosevelt bull elk-Pacific Northwest rainforest by Archer, Ken

Red-tailed hawk flying-Colorado-USA by Archer, Ken

Cinnamon teal drake preening-Southern California-USA by Archer, Ken

Ring-necked duck drake-Southern California wetland-USA by Archer, Ken

Wood duck drake calling-Southern California-USA by Archer, Ken

Wood duck drake calling-Southern California-USA by Archer, Ken

USA-Southern California-Poway-wood duck drakes by Archer, Ken

USA-Southern California-Poway-wood duck drake drying wings by Archer, Ken

American white pelican flyby-Southern California-USA by Archer, Ken

American white pelican flyby-Southern California-USA by Archer, Ken

USA-Washington State Skagit Valley Short-eared owl on the hunt by Archer, Ken

USA-Washington State Skagit Valley Short-eared owl by Archer, Ken

USA-Washington State Skagit Valley Short-eared owl in flight by Archer, Ken

Greater sage grouse altercation by Archer, Ken

Greater sage grouse courtship display by Archer, Ken

Greater sage grouse courtship display by Archer, Ken

Greater sage grouse-sunrise courtship dance-Colorado-USA by Archer, Ken

Greater sage grouse-dawn dance by Archer, Ken

Greater sage grouse by Archer, Ken

Greater sage grouse-spring courtship display on the lek-Colorado-USA by Archer, Ken

Greater sage grouse Males-stand off for territory on the lek-Colorado-USA by Archer, Ken

Shiras bull moose by Archer, Ken

Shiras bull moose by Archer, Ken

Shiras bull moose by Archer, Ken

Shiras bull moose-autumn snow by Archer, Ken

Grand Tetons and moose by Archer, Ken

Shiras moose cow with her calf in autumn light-USA Wyoming by Archer, Ken

Shiras bull moose encounters a calf moose in autumn light-USA Wyoming by Archer, Ken

Shiras bull moose by Archer, Ken

Bull moose-velvet antlers by Archer, Ken

Shiras bull moose-crossing stream by Archer, Ken

Shiras bull moose-foraging by Archer, Ken

Bull moose-velvet antlers by Archer, Ken

USA-Washington State Damon Point-snowy owl-last light by Archer, Ken

USA-Washington State Damon Point-snowy owl-winter rain by Archer, Ken

USA-Washington State Damon Point-snowy owl flying by Archer, Ken

USA-Washington State Damon Point-snowy owl-winter sunlight by Archer, Ken

Sharp-tailed grouse-vantage point by Archer, Ken

Sharp-tailed grouse by Archer, Ken

Columbia sharp-tailed grouse courtship display-western prairie-Colorado-USA by Archer, Ken

USA-Washington State Skagit Valley-tundra swans flying-winter storm clouds by Archer, Ken

USA-South Texas Brown pelican-close-up of youngster by Archer, Ken

USA-South Texas Aranas National Wildlife refuge-brown pelican by Archer, Ken

USA-South Texas Aranas National Wildlife Refuge-blue-winged teal drake by Archer, Ken

USA-South Texas Aranas National Wildlife Refuge-blue-winged teal ducks by Archer, Ken

USA-South Texas Laguna Seca-crested caracara alighting by Archer, Ken

USA-South Texas Laguna Seca-crested caracara display by Archer, Ken

USA-South Texas Long-billed thrasher alighting on cactus by Archer, Ken

USA-South Texas Laguna Seca-Harriss hawk by Archer, Ken

USA-South Texas Laguna Seca-Harriss hawk by Archer, Ken

USA-South Texas Aranas National Wildlife Refuge-black-bellied whistling ducks alighting by Archer, Ken

Canada-British Columbia-Boundary Bay-wood duck close-up by Archer, Ken

Canada-British Columbia-Boundary Bay-wood duck hen resting by Archer, Ken

Canada-British Columbia-Boundary Bay-wood duck drakes resting by Archer, Ken

Wild stallion-dominance display by Archer, Ken

Wild horse on the move by Archer, Ken

Wild horses on the move by Archer, Ken

Wild mustang by Archer, Ken

Wild mustang stallions by Archer, Ken

Wild mustang stallions by Archer, Ken

Wild mustangs resting by Archer, Ken

Wild mustangs-horse language-Sand Wash Basin-Colorado-USA by Archer, Ken

Wild mustangs-mare and colt USA-Colorado by Archer, Ken

Wild mustang stallion USA-Colorado by Archer, Ken

Wild mustang stallions USA-Colorado by Archer, Ken

A Yacare caiman-Caiman Crocodylus yacare-in the Cuiaba River Mato Grosso Do Sul State-Brazil by Pitamitz, Sergio

Two Hyacinth macaws perching on a branch Mato Grosso Do Sul State-Brazil by Pitamitz, Sergio

A group of Capybara-Hydrochoerus Hydrochoerus-wade in a river Mato Grosso Do Sul State-Brazil by Pitamitz, Sergio

A Giant otter-Pteronura brasiliensis-rests in a river Mato Grosso Do Sul State-Brazil by Pitamitz, Sergio

A Yacare caiman-on the surface of the Cuiaba River Mato Grosso Do Sul State-Brazil by Pitamitz, Sergio

A Jaguar looking for prey near the Cuiaba River in Brazil Mato Grosso Do Sul State-Brazil by Pitamitz, Sergio

A Jaguar-Panthera onca-walking along the Cuiaba River Mato Grosso Do Sul State-Brazil by Pitamitz, Sergio

A Jaguar-Panthera onca-resting on a tree branch Mato Grosso Do Sul State-Brazil by Pitamitz, Sergio

A Yacare caiman--jumping out of the Cuiaba River Mato Grosso Do Sul State-Brazil by Pitamitz, Sergio

A Giant otter-Pteronura brasiliensis-in the Cuiaba River Mato Grosso Do Sul State-Brazil by Pitamitz, Sergio

A Giant otter-resting in the Cuiaba River Mato Grosso Do Sul State-Brazil by Pitamitz, Sergio

Portrait of a Jaguar in the Wetlands of Pantanal-Brazil Mato Grosso do Sul State-Brazil by Pitamitz, Sergio

A Yacare caiman walking along the Cuiaba River Mato Grosso Do Sul State-Brazil by Pitamitz, Sergio

A black-collared hawk on a branch Rio Claro-Pantanal-Mato Grosso-Brazil by Pitamitz, Sergio

A jaguar-Panthera onca-resting on a river bank Pantanal-Mato Grosso-Brazil by Pitamitz, Sergio

A jaguar,resting in the shade and looking at the camera Pantanal-Mato Grosso-Brazil by Pitamitz, Sergio

Close-up portrait of a jaguar-Panthera onca-looking at the camera Pantanal-Mato Grosso-Brazil by Pitamitz, Sergio

A rockhopper penguin-Eudyptes chrysocome-looking at the camera Pebble Island-Falkland Islands by Pitamitz, Sergio

Three rockhopper penguins-Eudyptes chrysocome-on a cliff Pebble Island-Falkland Islands by Pitamitz, Sergio

Portrait of a rockhopper penguin-Eudyptes chrysocome Pebble Island-Falkland Islands by Pitamitz, Sergio

Close-up portrait of a rockhopper penguin-Eudyptes chrysocome Pebble Island-Falkland Islands by Pitamitz, Sergio

Close-up portrait of a rockhopper penguin-Eudyptes chrysocome Pebble Island-Falkland Islands by Pitamitz, Sergio

Gentoo penguin-Pygoscelis Papua-coming ashore Pebble Island-Falkland Islands by Pitamitz, Sergio

Gentoo penguins-Pygoscelis Papua-coming ashore Pebble Island-Falkland Islands by Pitamitz, Sergio

A Gentoo penguin-Pygoscelis Papua-walking to the beach Sea Lion Island-Falkland Islands by Pitamitz, Sergio

A Magellanic oystercatcher resting on the ground Sea Lion Island-Falkland Islands by Pitamitz, Sergio

Portrait of a king penguin-Aptenodytes patagonicus Volunteer Point-Falkland Islands by Pitamitz, Sergio

King penguins-Aptenodytes patagonicus-at a water pond Volunteer Point-Falkland Islands by Pitamitz, Sergio

A king penguin colony-Aptenodytes patagonicus Volunteer Point-Falkland Islands by Pitamitz, Sergio

King penguins-Aptenodytes patagonicus-at a colony Volunteer Point-Falkland Islands by Pitamitz, Sergio