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Adult black-browed albatross (Thalassarche melanophrys), in flight returning to nesting site on West Point Island, Falklands, South America

A rare melanistic king penguin (Aptenodytes patagonicus), feeding its okum boy chick at Fortuna Bay, South Georgia Island, Polar Regions

Northern giant petrel (Macronectes halli) threat display while feeding on elephant seal pup carcass at Stromness, South Georgia, Polar Regions

Antarctic shag (Phalacrocorax atriceps bransfieldensis), in flight with nesting material in its beak at Jougla Point, Antarctica, Polar Regions

Female Harpy eagle (Harpia harpyja), feeding her four month old chick, Alta Floresta, Amazon, Brazil, South America

Female Harpy eagle (Harpia harpyja), feeding her four month old chick, Alta Floresta, Amazon, Brazil, South America

Author Carl Safina photographing a pair of Magellanic penguins (Spheniscus magellanicus), Patagonia, Argentina, South America

Adult dovekie (Little Auk) (Alle alle) at their breeding site amongst scree slopes at Rubini Rock, Tikhaya Bay, Hooker Island, Franz Josef Land, Russia, Arctic Ocean, Eurasia

Adult dovekies (Little Auk) (Alle alle) at their breeding site amongst scree slopes at Rubini Rock, Tikhaya Bay, Hooker Island, Franz Josef Land, Russia, Arctic Ocean, Eurasia

Adult black-legged kittiwake (Rissa tridactyla) in aerial combat against another kittiwake near Alexander Island, Russia, Eurasia

Young woman watching from Senillosa observation post in the Nature reserve of Els Aiguamolls de Emporda, Costa Brava, Catalonia, Spain, Europe

Seagull nesting on the Lihou islet, Island of Guernsey, Bailiwick of Guernsey, British Crown dependency, English Channel, Europe

Adult cape petrels (Daption capense), in flight near Deception Island, Antarctica, Southern Ocean, Polar Regions

Chinstrap penguins (Pygoscelis antarctica), ecstatic display at breeding colony at Half Moon Island, Antarctica, Polar Regions

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

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

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

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

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

Juvenile puffin (Fratercula arctica) on the water near the island of Bolscheoya in the Svalbard Archipelago, Norway, Arctic, Europe

Adult glaucous gull (Larus hyperboreus) eating common eider duckling (Somateria mollissima) in Svalbard, Norway, Arctic, Europe

Adult Arctic Skua (Stercorarius parasiticus), on ice floe in the Svalbard Archipelago, Norway, Arctic, Europe

Adult great skua (Stercorarius skua) with recent kill 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

Northern fulmar (Fulmarus glacialis glacialis) motion blur on the wing the Svalbard Archipelago, Norway, Arctic, Europe

Great frigatebird (Fregata minor) in flight near guests on North Seymour Island in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Great frigatebird chick (Fregata minor) on the nest on North Seymour Island in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

Great frigatebird (Fregata minor) taking handouts from a fisherman in Puerto Ayora on Santa Cruz Island, Galapagos, UNESCO World Heritage Site, Ecuador, South America

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

Adult great blue heron (Ardea herodias cognata) feeding on green sea turtle hatchlings, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Adult great blue heron (Ardea herodias cognata) hunting for green sea turtle hatchlings in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Adult yellow warbler (Dendroica petechia aureola) in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

Galapagos brown pelican (Pelecanus occidentalis urinator) feeding in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

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

Male Great frigatebird (Fregata minor) in breeding plumage with greenish metalic sheen to feathers) North Seymour Island, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Male Great frigatebird (Fregata minor) in flight against the nearly full moon on Genovesa (Tower) Island, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

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

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

Male Great frigatebird (Fregata minor) trying to steal nesting material from a red-footed booby, Galapagos, UNESCO World Heritage Site, Ecuador, South America

Black and white image of an Atlantic Puffin, Fratercula arctica, in Borgarfjaroarhofn, Iceland, Polar Regions

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

Black and whilte image of an Atlantic Puffin (Fratercula arctica), after having jumped from a cliff edge in Borgarfjaroarhofn, Iceland, Polar Regions

Adult Galapagos brown pelican (Pelecanus occidentalis urinator) in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

Greater flamingos (Phoenicopterus ruber) foraging for small pink shrimp in saltwater lagoon in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Greater flamingos (Phoenicopterus ruber) foraging for small pink shrimp in saltwater lagoon in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Greater flamingo (Phoenicopterus ruber) in flight over saltwater lagoon in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Greater flamingo (Phoenicopterus ruber) foraging for small pink shrimp in saltwater lagoon in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Greater flamingo (Phoenicopterus ruber) foraging for small pink shrimp in saltwater lagoon in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

An Atlantic Puffin (Fratercula arctica), with twigs in its beak in Borgarfjaroarhofn, Iceland, Polar Regions

An Atlantic Puffin (Fratercula arctica), atop a cliff with an Iceland gull (Larus glaucoides), soaring above in Westman Islands, Iceland, Polar Regions

Black and white image of an Atlantic Puffin (Fratercula arctica), in Borgarfjaroarhofn, Iceland, Polar Regions

Black and white image of an Atlantic Puffin (Fratercula arctica), at sunset in Borgarfjaroarhofn, Iceland, Polar Regions

Black and white image of an Atlantic Puffin (Fratercula arctica), at sunset in Borgarfjaroarhofn, Iceland, Polar Regions

Nazca booby (Sula grantii) downy chick in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

Adult Nazca booby (Sula grantii) courtship behavior in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

Nazca booby (Sula grantii) downy chick stretching its wings to gather strength for flight in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Adult red-footed booby (Sula sula) in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

Adult red-footed booby (Sula sula) being attacked in flight by a great frigatebird (Fregata minor) in the Galapagos, UNESCO World Heritage Site, Ecuador, South America

Adult red-footed booby (Sula sula) returning to the nest site with nest building material in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Adult red-footed booby (Sula sula) returning to the nest site with nest building material in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Adult red-footed booby (Sula sula) being attacked in flight by a great frigatebird (Fregata minor) in the Galapagos, UNESCO World Heritage Site, Ecuador, South America

Adult red-footed booby (Sula sula) returning to the nest site in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Galapagos penguin (Spheniscus mendiculus) hauled out on lava in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

Adult blue-footed booby (Sula nebouxii) in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

Adult red-footed booby (Sula sula) head detail in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

Adult red-footed booby (Sula sula) at sunset in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

Breeding pair of Shags (Gulosus aristotelis) by their nest on cliffs at Braes peninsula, a red listed bird, The Braes, Portree, Skye, Inner Hebrides, Scotland, United Kingdom, Europe

A breeding Shag (Gulosus aristotelis) by its nest on cliffs at Braes peninsula, a red listed bird, The Braes, Portree, Skye, Inner Hebrides, Scotland, United Kingdom, Europe

Adult wandering albatross (Diomedea exulans) in flight near the Tristan da Cunha Group, South Atlantic Ocean

Adult wandering albatross (Diomedea exulans) in flight near the Tristan da Cunha Group, South Atlantic Ocean

A dawn view of Boatswain Bird Island just off Ascension Island in the southern tropical Atlantic Ocean, South Atlantic Ocean

Adult black noddy (Anous minutus) breeding site on Boatswain Bird Island just off Ascension Island, South Atlantic Ocean

Adult black noddy (Anous minutus) breeding site on Boatswain Bird Island just off Ascension Island, South Atlantic Ocean

Adult black noddy (Anous minutus) breeding site on Boatswain Bird Island just off Ascension island, South Atlantic Ocean

Caspian Terns (Hydroprogne caspia) at breeding colony on Ile des Oiseaux in the Parc National du Delta du Saloum, UNESCO World Heritage Site, Senegal, West Africa, Africa

Caspian Terns (Hydroprogne caspia) at breeding colony on Ile des Oiseaux in the Parc National du Delta du Saloum, UNESCO World Heritage Site, Senegal, West Africa, Africa

Caspian Terns (Hydroprogne caspia) at breeding colony on Ile des Oiseaux in the Parc National du Delta du Saloum, UNESCO World Heritage Site, Senegal, West Africa, Africa

Caspian Terns (Hydroprogne caspia) at breeding colony on Ile des Oiseaux in the Parc National du Delta du Saloum, UNESCO World Heritage Site, Senegal, West Africa, Africa

Caspian Tern (Hydroprogne caspia) at breeding colony on Ile des Oiseaux in the Parc National du Delta du Saloum, UNESCO World Heritage Site, Senegal, West Africa, Africa

Caspian Terns (Hydroprogne caspia) at breeding colony on Ile des Oiseaux in the Parc National du Delta du Saloum, UNESCO World Heritage Site, Senegal, West Africa, Africa

Adult Royal Tern (Thalasseus maximus albididorsalis) in flight at breeding colony on Ile des Oiseaux, Parc National du Delta du Saloum, UNESCO World Heritage Site, Senegal, West Africa, Africa

Caspian Terns (Hydroprogne caspia) at breeding colony on Ile des Oiseaux in the Parc National du Delta du Saloum, UNESCO World Heritage Site, Senegal, West Africa, Africa

Caspian Terns (Hydroprogne caspia) at breeding colony on Ile des Oiseaux in the Parc National du Delta du Saloum, UNESCO World Heritage Site, Senegal, West Africa, Africa

Young northern gannets (Morus bassanus) in flight near Ile des Oiseaux in the Parc National du Delta du Saloum, UNESCO World Heritage Site, Senegal, West Africa, Africa