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

Northern fulmar (Fulmarus glacialis glacialis) on the wing in the Svalbard Archipelago, Norway

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

Adult Svalbard reindeer (Rangifer tarandus platyrhynchus) grazing on tundra in the Svalbard Archipelago, Norway, Arctic, Europe

Male Great frigatebird (Fregata minor) in breeding plumage with red gular pouch, on Genovesa (Tower) Island, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

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

Chinstrap penguin (Pygoscelis antarctica) breeding colony at Cooper Bay, South Georgia

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

Adult California gray whale (Eschrictius robustus), surfacing near boat in San Ignacio Lagoon, Baja California, Mexico, North America

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

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