Adult black-legged kittiwakes (Rissa tridactyla) feeding at the base of a glacier in the Svalbard Archipelago, Norway, Arctic, Europe

Adult black-legged kittiwakes (Rissa tridactyla) resting on ice in the Svalbard Archipelago, Barents Sea, Norway, Arctic, Europe

Adult black-legged kittiwakes (Rissa tridactyla) resting on ice in the Svalbard Archipelago, Barents Sea, Norway, Arctic, Europe

Brunnich's guillemot (Uria lomvia) breeding and nesting site at Cape Fanshawe in the Svalbard Archipelago, Norway, Arctic, Europe

Adult arctic tern (Sterna paradisaea) feeding on small fish on Spitsbergen Island in the Svalbard Archipelago, Norway, Arctic, Europe

Northern fulmar (Fulmarus glacialis glacialis) on the wing over calm seas in the Svalbard Archipelago, Norway, Arctic, Europe

An Atlantic Puffin (Fratercula arctica), landing on a cliff in Borgarfjaroarhofn, Iceland, Polar Regions

A pair of Atlantic Puffins (Fratercula arctica), on a hilltop in Borgarfjaroarhofn, Iceland, Polar Regions

An Atlantic Puffin (Fratercula arctica), in Borgarfjaroarhofn, Iceland, Polar Regions

Seabirds Resting on Rugged Limestone Rocks Above Turquoise Waters at Kaikoura Peninsula, New Zealand

Hamerkop (Scopus umbretta) carrying nesting material, Zimanga Game Reserve, South Africa, Africa

Colony of Peruvian Pelicans (Pelecanus thagus), Ballestas Islands, Paracas, Peru, South America

Adelie penguin (Pygoscelis adeliae) breeding colony at Brown Bluff on the eastern side of the Antarctic Peninsula, Antarctica, Polar Regions

An adult mangrove swallow (Tachycineta albilinea), on New River near the Mesoamerican archaeological site of Lamanai, Belize

An avocet (Recurvirostra avosetta), at Brownsea Island, a nature reserve in Poole Harbour, Dorset, England, United Kingdom, Europe

Seagulls on top of rocks on a stormy day above turquoise sea, Greece

Adult humpback whale (Megaptera novaeangliae) tail throw among feeding whales in Southeast Alaska, United States of America

Adult humpback whales (Megaptera novaeangliae) co-operatively bubble-net feeding in Southeast Alaska, United States of America

Adult red phalarope (Phalaropus fulicarius) in the Svalbard Archipelago, Norway

Adult razorbill, (Alca torda) along the Atlantic coast of Iceland

Adult red-necked phalaropes (Phalaropus lobatus) in breeding plumage on Flatey Island, Iceland

Chinstrap penguin (Pygoscelis antarctica) breeding colony at Baily Head on Deception Island, Antarctica, Southern Ocean, Polar Regions

Brunnich's guillemot (Uria lomvia) breeding and nesting site at Cape Fanshawe in the Svalbard Archipelago, Norway, Arctic, Europe

Adult imperial shags (Phalacrocorax (atriceps) atriceps) in flight in the Falkland Islands, South Atlantic Ocean, South America

Summer migration of Kazaks, Altay Mountains, northeast Xinjiang, China, Asia

Summer migration of Kazaks, Altay Mountains, northeast Xinjiang, China, Asia

Humpback Whales (Megaptera novaeangliae) feeding on Krill in Wilhelmena Bay, Antarctic Peninsular and surfacing wth a metre of a zodiak. The whales migrate here in the summer to feed on the Krill. Krill numbers have declined by over 50%. They feed on algae that grows on the underside of sea ice, As the sea ice melts, both algae and krill decline. This shot has penguins resting on an iceberg in the background.

Humpback Whales (Megaptera novaeangliae) feeding on Krill in Wilhelmena Bay, Antarctic Peninsular. The whales migrate here in the summer to feed on the Krill. Krill numbers have declined by over 50%. They feed on algae that grows on the underside of sea ice, As the sea ice melts, both algae and krill decline. An expedition cruise ship in the background

Humpback Whales (Megaptera novaeangliae) feeding on Krill in Wilhelmena Bay, Antarctic Peninsular. With passengers from an expedition crusie in Zodiaks. The whales migrate here in the summer to feed on the Krill. Krill numbers have declined by over 50%. They feed on algae that grows on the underside of sea ice, As the sea ice melts, both algae and krill decline.

Humpback Whales (Megaptera novaeangliae) feeding on Krill in Wilhelmena Bay, Antarctic Peninsular. The whales migrate here in the summer to feed on the Krill. Krill numbers have declined by over 50%. They feed on algae that grows on the underside of sea ice, As the sea ice melts, both algae and krill decline.

The Indian summer colours the tree line along the coast indicating the oncoming winter. A sign that Minke whales (Balaenoptera acutorostrata) should start their migration south to unknown waters. St. Lawrence estuary, Canada

Elephant herd on a plain, Kenya, Maasai Mara

Three caribou (Rangifer tarandus) walk by oil storage tanks near Prudhoe Bay and the Point Lonely Short Range Radar Site, where the Central Arctic herd migrates north each summer, Alaska, United States of America

Sockeye Salmons near the bank, Kuril Lake Kamchatka Russia

Kuril Lake Kamchatka Russia

Dotterel ground in migration, Alps Valais Switzerland

Common Redpoll (Acanthis flammea) on rock, GreenlandIt is one of the four sparrows that makes the great migration and thus crosses the Greenland Sea to nest in the recessed places of Greenland.

Dotterel ground in migration, Alps Valais Switzerland