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Yellow-footed gull (Larus livens), on its nest on Isla San Esteban, Baja California, Sea of Cortez, Mexico, North America

Yellow-footed gull (Larus livens), on its nest on Isla Coronado, Baja California Sur, Sea of Cortez, Mexico, North America

Injured juvenile yellow-footed gull (Larus livens), on Isla Coronado, Baja California Sur, Sea of Cortez, Mexico, North America

Yellow-footed gull (Larus livens), eggs in nest on Isla Coronado, Baja California Sur, Sea of Cortez, Mexico, North America

Osprey (Pandion haliaetus), in flight to its nest, Isla San Lorenzo, Baja California, Sea of Cortez, Mexico, North America

Double-crested cormorant (Nannopterum auritum), taking flight, Concepcion Bay, Baja California Sur, Sea of Cortez, Mexico, North America

Double-crested cormorant (Nannopterum auritum), taking flight, Concepcion Bay, Baja California Sur, Sea of Cortez, Mexico, North America

Heermann's gulls (Larus heermanni), at breeding colony on Isla Rasa, Baja California, Sea of Cortez, Mexico, North Anerica

Heermann's gulls (Larus heermanni), quarreling at breeding colony on Isla Rasa, Baja California, Sea of Cortez, Mexico, North Anerica

Heermann's gull (Larus heermanni), at breeding colony on Isla Rasa, Baja California, Sea of Cortez, Mexico, North Anerica

Heermann's gull (Larus heermanni), at breeding colony on Isla Rasa, Baja California, Sea of Cortez, Mexico, North Anerica

Heermann's gull (Larus heermanni), at breeding colony on Isla Rasa, Baja California, Sea of Cortez, Mexico, North Anerica

Heermann's gulls (Larus heermanni), feeding on the beach at Isla Carmen, Baja California Sur, Sea of Cortez, Mexico, North America

Heermann's gull (Larus heermanni), in flight above the beach at Isla Carmen, Baja California Sur, Sea of Cortez, Mexico, North America

Brown booby (Sula leucogaster), in flight off small islet north of Isla San Marcos, Baja California Sur, Sea of Cortez, Mexico, North America

Adult brown pelicans (Pelecanus occidentalis), plunge diving for fish, Isla Carmen, Baja California Sur, Mexico, North America

An injured bull California sea lion (Zalophus californianus), hauled out on Isla San Pedro Martir, Sea of Cortez, Mexico, North America

Adult brown pelican (Pelecanus occidentalis), taking flight on a small islet near Isla Salsipuedes, Baja California, Mexico, North America

Adult brown pelicans (Pelecanus occidentalis), on a small islet near Isla Salsipuedes, Baja California, Mexico, North America

Adult brown pelicans (Pelecanus occidentalis), plunge diving for fish, Isla Carmen, Baja California Sur, Mexico, North America

Adult brown pelican (Pelecanus occidentalis), plunge diving for fish, Isla Carmen, Baja California Sur, Mexico, North America

Yellow Crowned Night Heron (Nyctanassa Violacea), wading bird of the Americas that feeds on crustacea, Bermuda, Atlantic

Adult brown pelicans (Pelecanus occidentalis), plunge diving for fish, Isla Carmen, Baja California Sur, Mexico, North America

Adult brown pelicans (Pelecanus occidentalis), flying in formation, Isla Carmen, Baja California Sur, Mexico, North America

Adult Brunnich's guillemots (Uria lomvia) in a territorial dispute at Alkefjellet, Spitsbergen, Svalbard, Norway, Europe

A curious adult cape petrel (Daption capense), Lindblad Cove, Trinity Peninsula, Antarctica, Polar Regions

Seagull, Beachy Head chalk cliffs, with Beachy Head Lighthouse in background, South Downs National Park, East Sussex, England, United Kingdom

Adult Atlantin puffin (Fratercula arctica) during breeding season, Isfjardardjup, Westfjords region, Northwestern Iceland

Adult Atlantin puffin (Fratercula arctica) during breeding season, Isfjardardjup, Westfjords region, Northwestern Iceland

Adult Atlantin puffin (Fratercula arctica) during breeding season on Sumburgh Head, Shetlands, Scotland, United Kingdom

Adult brown pelican (Pelecanus occidentalis), plunge diving for fish, Isla Carmen, Baja California Sur, Mexico, North America

Western gull (Larus occidentalis), in non-breeding adult plumage, Monterey Bay, Monterey, California, United States of America, North America

King penguin (Aptenodytes patagonicus) chicks called Okum Boys at Gold Harbor, South Georgia, Polar Regions

Brown pelicans (Pelecanus occidentalis) at a sardine processing plant, Puerto San Carlos, Baja California Sur, Mexico, North America

Glaucous gull (Larus hyperboreus), in flight in Makinson Inlet, Ellesmere Island, Nunavut, Canada, North America

A group of Adelie penguins (Pygoscelis adeliae) on sea ice in Duse Bay, Weddell Sea, Antarctica, Polar Regions

Adelie penguins (Pygoscelis adeliae), walking and tobogganing along the first year ice in Gerlache Strait, Antarctica, Polar Regions

Adelie penguins (Pygoscelis adeliae), leaping near breeding colony, Heroina Island, Danger Island Group, Antarctica, Polar Regions

Adelie penguins (Pygoscelis adeliae), marching on the beach at Brown Bluff, Antarctic Sound, Antarctica, Polar Regions

A group of emperor penguins (Aptenodytes forsteri), on the ice near Snow Hill Island, Weddell Sea, Antarctica, Polar Regions

Gentoo penguins (Pygoscelis papua) walking on pebbles, Brown Bluff, Tabarin Peninsula, Weddell Sea, Antarctica, Polar Regions

Adult brown pelican (Pelecanus occidentalis), in flight in Concepcion Bay, Baja California, Mexico, North America

Adult brown pelicans (Pelecanus occidentalis), on a small islet near Isla Salsipuedes, Baja California, Mexico, North America

California sea lion bulls (Zalophus californianus), hauled out on a small islet off San Marcos Island, Sea of Cortez, Mexico, North America

Washing at the ghats on the Narmada River at the Ahilya Fort and Temples, Maheshwar, Madhya Pradesh, India

A curious male leopard seal (Hydrurga leptonyx), underwater at Monroe Island, South Orkney Islands, Antarctica, Polar Regions

Adult black guillemot (Cepphus grylle) at breeding site on Alexander Island, Franz Josef Land, Russia, Arctic Ocean, Eurasia

Adult Swallow-tailed gull (Creagrus furcatus) in flight in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

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

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

Gentoo penguins (Pygoscelis papua), Port Lockroy British Antarctic Base, Wiencke Island, Antarctica, Polar Regions

Kittiwakes sitting on a huge piece of glacier ice with an expedition boat in the background, Hornsund, Svalbard, Arctic, Norway, Scandinavia, Europe

King penguin (Aptenodytes patagonicus) adults returning to sea for feeding in Gold Harbor, South Georgia, Polar Regions

Adult Heermann's gull (Larus heermanni), in flight near Isla Rasa, Baja California, Mexico, North America

Tufted puffin (Fratercula cirrhata) taking flight at South Marble Island, Glacier Bay National Park, Alaska, United States of America, North America

Chinstrap penguins (Pygoscelis antarcticus), marching to the sea on Coronation Island, South Orkneys, Antarctica, Polar Regions

A waterfall drops to the beach where elephant seals are hauled out on Annenkov Island, South Georgia, South Atlantic, Polar Regions

Penguins walk across the glacier on Thule Island, a volcanic island in the South Sandwich Islands, South Atlantic, Polar Regions

Close up of a Puffin, Puffin bird viewing site in Elliston, Bonavista Peninsula, Newfoundland, Canada, North America

Knot and Tern from South Walney Nature Reserve on the Cumbrian Coast, Cumbria, England, United Kingdom, Europe

Black-browed albatross flying, Francisco Coloane Marine Reserve, Magallanes, Patagonia, Chile, South America

Gentoo penguins (Pygoscelis papua), Port Lockroy British Antarctic Base, Wiencke Island, Antarctica, Polar Regions

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

Gentoo penguin colony (Pygoscelis papua) in front of a recently collapsed glacier, Damoy Point, Wiencke Island, Antarctica, Polar Regions

American oystercatcher (Haematopus palliatus), on Isla Espiritu Santo, Baja California Sur, Sea of Cortez, Mexico, North America

Blue-footed booby (Sula nebouxii), in flight near Isla Salsipuedes, Baja California, Sea of Cortez, Mexico, North America

Adult brown pelicans (Pelecanus occidentalis), standing together on Isla Tortuga, Baja California, Mexico, North America

Adult brown pelicans (Pelecanus occidentalis), on a small islet near Isla Salsipuedes, Baja California, Mexico, North America

Transient killer whales (Orcinus orca) feeding on a California grey whale calf, Monterey Bay, California, United States of America, North America

Group of King Penguins (Aptenodytes patagonicus) entering the ocean, Salisbury Plain, South Georgia Island, Antarctic, Polar Regions

Adult gentoo penguins (Pygoscelis papua), on the beach with king penguins in Gold Harbor, South Georgia, Polar Regions

Adult bottlenose dolphin (Tursiops truncatus), leaping to the sky, Isla San Pedro Martir, Baja California, Mexico, North America

An adult northern fulmar (Fulmarus glacialis), taking flight off the east coast of Greenland, Polar Regions

View of restaurant overlooking Old Port Beach, Mykonos Town, Mykonos, Cyclades Islands, Greek Islands, Aegean Sea, Greece, Europe

A pair of juvenile Galapagos hawks (Buteo galapagoensis), Rabida Island, Galapagos, Ecuador, South America

Over a million chinstrap penguins (Pygoscelis antarcticus), on Zavodovski Island, South Sandwich Islands, South Atlantic, Polar Regions

A pod of transient killer whales (Orcinus orca), feeding on a gray whale calf carcass in Monterey Bay Marine Sanctuary, California, United States of America, North America

Juvenile brown pelican (Pelecanus occidentalis), in flight in Monterey Bay Marine Sanctuary, Monterey, California, United States of America, North America

View of African penguins on Boulders Beach, Seaforth, Table Mountain National Park, Cape Town, Western Cape, South Africa, Africa

Adult imperial cormorant (Phalacrocorax atriceps) returning from the sea with nesting material, Saunders Island, Falkland Islands, South America

Celtic Monastery, Skellig Michael, UNESCO World Heritage Site, County Kerry, Munster, Republic of Ireland, Europe

Local small Senegalese fishing boat near Ile des Oiseaux (Bird Island) in the Parc National du Delta du Saloum, UNESCO World Heritage Site, Senegal, West Africa, Africa

King penguin (Aptenodytes patagonicus) detail at breeding and nesting colony at St. Andrews Bay on South Georgia, Southern Ocean, Polar Regions