1112-9843 - Great frigatebird chick (Fregata minor) on the nest on North Seymour Island in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

1112-9756 - Brunnich's guillemot (Uria lomvia) breeding and nesting site at Cape Fanshawe in the Svalbard Archipelago, Norway, Arctic, Europe

1112-9751 - Brunnich's guillemot (Uria lomvia) in flight near breeding and nesting site at Cape Fanshawe in Svalbard, Norway, Arctic, Europe

1112-9748 - Brunnich's guillemot (Uria lomvia) breeding and nesting site at Cape Fanshawe in the Svalbard Archipelago, Norway, Arctic, Europe

1112-9747 - Brunnich's guillemot (Uria lomvia) breeding and nesting site at Cape Fanshawe in the Svalbard Archipelago, Norway, Arctic, Europe

1112-9745 - Brunnich's guillemot (Uria lomvia) breeding and nesting site at Cape Fanshawe in the Svalbard Archipelago, Norway, Arctic, Europe

1112-9744 - Common guillemot (Uria aalge) nesting on Bear Island (Bjornoya) in the Svalbard Archipelago, Norway, Arctic, Europe

1112-9743 - Common guillemot (Uria aalge) nesting on Bear Island (Bjornoya) in the Svalbard Archipelago, Norway, Arctic, Europe

1112-9736 - Adult black-legged kittiwakes (Rissa tridactyla) feeding at the base of a glacier in the Svalbard Archipelago, Norway, Arctic, Europe

1112-9729 - Adult black-legged kittiwake (Rissa tridactyla) on nest with chick in the Svalbard Archipelago, Barents Sea, Norway, Arctic, Europe

1112-9720 - Adult Dovekie (Little Auk) (Alle alle) breeding area in the Norge Islands in the Svalbard Archipelago, Norway, Arctic, Europe

1202-922 - Sandwich Terns (Sterna sandivicensis), in their breeding colony in June, on Brownsea Island, a nature reserve in Poole Harbour, Dorset, England, United Kingdom, Europe

1202-919 - Common Terns (Sterna hirundo), in their breeding colony in June, on Brownsea Island, a nature reserve in Poole Harbour, Dorset, England, United Kingdom, Europe

1202-898 - Atlantic Puffin (Fratercula arctica), on Skomer Island in July, a nature reserve off the coast of Pembrokeshire, Wales, United Kingdom, Europe

1202-894 - Atlantic Puffin (Fratercula arctica), on Skomer Island in July, a nature reserve off the coast of Pembrokeshire, Wales, United Kingdom, Europe

1202-893 - Atlantic Puffin (Fratercula arctica), on Skomer Island in July, a nature reserve off the coast of Pembrokeshire, Wales, United Kingdom, Europe

1202-889 - Atlantic Puffin (Fratercula arctica), on Skomer Island in July, a nature reserve off the coast of Pembrokeshire, Wales, United Kingdom, Europe

1202-887 - Atlantic Puffin (Fratercula arctica), on Skomer Island in July, a nature reserve off the coast of Pembrokeshire, Wales, United Kingdom, Europe

1202-882 - A Little Egret (Egretta garzetta), during the breeding season, on Brownsea Island, a nature reserve in Poole Harbour, Dorset, England, United Kingdom, Europe

1202-874 - An avocet (Recurvirostra avosetta), at Brownsea Island, a nature reserve in Poole Harbour, Dorset, England, United Kingdom, Europe

1112-9650 - Adult black guillemot (Cepphus grylle) at breeding site on Alexander Island, Franz Josef Land, Russia, Arctic Ocean, Eurasia

1112-9538 - Adult Magellanic penguin (Spheniscus magellanicus) at a breeding site on Peninsula Valdez, Patagonia, Argentina, South America

1112-9537 - Adult Magellanic penguin (Spheniscus magellanicus) at a breeding site on Peninsula Valdez, Patagonia, Argentina, South America

1363-31 - Puffin with beakful of grasses, United Kingdom, Europe

1363-28 - Atlantic puffins standing together, United Kingdom, Europe

802-843 - Puffins, Mingulay, Outer Hebrides, Scotland, United Kingdom, Europe

1112-9517 - Southern elephant seal (Mirounga leonina) bull holding adult female in the surf to mate with her, South Georgia, Polar Regions

1112-9498 - Hundreds of southern elephant seals (Mirounga leonina) hauled out onto the breeding beach at Gold Harbour, South Georgia, Polar Regions

1112-9496 - Adult beachmaster bull southern elephant seal (Mirounga leonina) challenging another male at Gold Harbour, South Georgia, Polar Regions

1112-9490 - Adult bull southern elephant seal (Mirounga leonina) with females and pups at Gold Harbour on South Georgia Island, Polar Regions

1112-9470 - Beachmaster bull southern elephant seal (Mirounga leonina) attempting to mate at Peggotty Bluff, South Georgia, Polar Regions

1112-9471 - Beachmaster bull southern elephant seal (Mirounga leonina) attempting to mate at Peggotty Bluff, South Georgia, Polar Regions

1112-9455 - Adult Subantarctic Skua (Catharacta antarctica lonnbergi) on tussac at Salisbury Plain on South Georgia Island, Polar Regions

1112-9453 - Adult gentoo penguin (Pygoscelis papua) amongst king penguins (Aptenodytes patagonicus) at nesting and breeding colony at Gold Harbour on South Georgia Island, Southern Ocean, Polar Regions

1112-9443 - Adult king penguins (Aptenodytes patagonicus) amongst chicks at breeding colony at Gold Harbour, South Georgia Island, Polar Regions

1112-9441 - Adult king penguins (Aptenodytes patagonicus) amongst chicks at breeding colony at Gold Harbour, South Georgia Island, Polar Regions

1112-9437 - Adult king penguins (Aptenodytes patagonicus) returning to sea from the nesting colony at Salisbury Plain, South Georgia, Polar Regions

1112-9436 - Adult king penguins (Aptenodytes patagonicus) returning to sea from the nesting colony at Salisbury Plain, South Georgia, Polar Regions

1112-9434 - Adult king penguins (Aptenodytes patagonicus) returning from sea to the nesting colony at Salisbury Plain, South Georgia, Polar Regions

1112-9435 - Adult king penguins (Aptenodytes patagonicus) returning from sea to the nesting colony at Salisbury Plain, South Georgia, Polar Regions

1112-9431 - Adult king penguins (Aptenodytes patagonicus) returning from sea to the breeding colony at Salisbury Plain, South Georgia, Polar Regions

1112-9428 - King penguin (Aptenodytes patagonicus) chicks (okum boys) at nesting colony at Salisbury Plain, South Georgia, Polar Regions

1112-9426 - King penguin (Aptenodytes patagonicus) chicks (okum boys) at nesting colony at Salisbury Plain, South Georgia, Polar Regions

1112-9423 - Sunrise on king penguins (Aptenodytes patagonicus) at nesting and breeding colony at Salisbury Plain, South Georgia, Polar Regions

1112-9422 - Sunrise on king penguin (Aptenodytes patagonicus) at nesting and breeding colony at Salisbury Plain, South Georgia, Polar Regions

1112-9420 - Adult and okum boy king penguins (Aptenodytes patagonicus) at breeding colony at Gold Harbor, South Georgia, Polar Regions

1112-9400 - Adult southern rockhopper penguins (Eudyptes chrysocome), at breeding colony on West Point Island, Falklands, South America

1112-9396 - Adult black-browed albatross (Thalassarche melanophrys), pair in courtship display at nesting site on New Island, Falklands, South America

1112-9389 - Adult black-browed albatross (Thalassarche melanophrys), pair in courtship display at nesting site on New Island, Falklands, South America

1112-9381 - Imperial Shag (Phalacrocorax atriceps), pair exhibiting courtship behavior on New Island in the Falkland Islands, South America

1112-9380 - Imperial Shag (Phalacrocorax atriceps), pair exhibiting courtship behavior on New Island in the Falkland Islands, South America

1112-9308 - Adult gentoo penguin (Pygoscelis papua), feeding chicks at Brown Bluff near the Antarctic Peninsula, Southern Ocean, Polar Regions

1112-9303 - Adult gentoo penguins (Pygoscelis papua), returning and coming from the sea at Booth Island, Antarctica, Southern Ocean, Polar Regions

1112-9277 - Chinstrap penguins (Pygoscelis antarctica), at breeding colony at Half Moon Island, Antarctica, Southern Ocean, Polar Regions

1112-9276 - Chinstrap penguin (Pygoscelis antarctica), at breeding colony at Half Moon Island, Antarctica, Southern Ocean, Polar Regions

1112-9275 - Chinstrap penguin (Pygoscelis antarctica), at breeding colony at Half Moon Island, Antarctica, Southern Ocean, Polar Regions

1112-9273 - Chinstrap penguin (Pygoscelis antarctica), leaping at breeding colony at Half Moon Island, Antarctica, Southern Ocean, Polar Regions

1112-9271 - Adult chinstrap penguins (Pygoscelis antarctica), mating at breeding colony on Half Moon Island, Antarctica, Polar Regions

1112-9267 - Adult chinstrap penguin (Pygoscelis antarctica), at breeding colony at Half Moon Island, Antarctica, Polar Regions

1112-9263 - Adult chinstrap penguin (Pygoscelis antarctica), carrying rock in its beak at breeding colony at Half Moon Island, Antarctica, Polar Regions

1112-9262 - Chinstrap penguins (Pygoscelis antarctica), breeding colony at Half Moon Island, Antarctica, Southern Ocean, Polar Regions

1112-9261 - Chinstrap penguins (Pygoscelis antarctica), breeding colony at Half Moon Island, Antarctica, Southern Ocean, Polar Regions

1112-9232 - Adelie penguins (Pygoscelis adeliae), at breeding colony at Brown Bluff on the eastern side of the Antarctic Peninsula, Antarctica, Polar Regions

1112-9230 - Adelie penguins (Pygoscelis adeliae), at breeding colony at Brown Bluff on the eastern side of the Antarctic Peninsula, Antarctica, Polar Regions

1112-9224 - Adelie penguins (Pygoscelis adeliae), in snow storm at breeding colony at Brown Bluff, Antarctic Peninsula, Antarctica, Polar Regions

1116-53319 - Close-up portrait of a male willow ptarmigan (Lagopus lagopus) showing early breeding colors in its neck and eye combs, surveying its high-country territory in Southcentral Alaska's Chugach Mountains on an April day. The head and neck will become completely chocolate-brown as the bird's breeding colors develop, Alaska, United States of America

1116-53248 - Bull moose (Alces alces) wades through the mist of a cool Southcentral Alaska evening during the September 'rut', or breeding season. Moose are the largest member of the deer family. The animals are circumpolar and the Alaska-Yukon race, Alces alces gigas, is the largest of all, Alaska, United States of America

1116-53247 - Alaska bull moose (Alces alces) patrols a marsh during the rut, or fall breeding season, in mid-September, Anchorage, Alaska, United States of America

1116-53462 - Bull moose (Alces alces) pauses late in the rut in South-central Alaska's Chugach State Park, Anchorage, Alaska, United States of America

1116-53461 - Approached by a cow moose, a bull (Alces alces), displays the Flehmen response late in the rut in Southcentral Alaska's Chugach State Park, Anchorage, Alaska, United States of America

1116-53460 - Sandhill crane (Grus canadensis) migrating north in late April to nesting grounds in Alaska, cries out from a farmer's field in Palmer, Alaska. Located in the Matanuska Valley, Palmer was founded as an agricultural colony in the mid-20th century, Palmer, Alaska, United States of America

1116-53455 - Mature bull moose (Alces alces) with a large rack of antlers spanning close to two meters (six feet) wide, pauses late in the rut in Southcentral Alaska's Chugach State Park, Alaska, United States of America

1116-53454 - Portrait of a bull moose (Alces alces) walking through an alpine meadow late in the rut in Southcentral Alaska's Chugach State Park, Alaska, United States of America

1116-53453 - Bull moose (Alces alces) is startled as a jealous cow threatens a competitor during the rut, or breeding season, in Southcentral Alaska's Chugach State Park, USA, Alaska, United States of America

1358-410 - Adult Swallow-Tailed Gull, showing breeding season red rimmed eye, a nocturnal equatorial seabird, found almost exclusively in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

832-401601 - Puffin (Fratercula arctica), Puffin breeding on Runde Island, Heroy, Norway, Europe

832-401600 - Puffin (Fratercula arctica), Puffin breeding on Runde Island, Heroy, Norway, Europe

832-401299 - European green woodpecker (Picus viridis), male at nest hole feeding the young, Biosphere Reserve, Swabian Alb, Baden-Wuerttemberg, Germany, Europe

832-401298 - European green woodpecker (Picus viridis), male at nest hole feeding the young, Biosphere Reserve, Swabian Alb, Baden-Wuerttemberg, Germany, Europe

860-291632 - Common Ringed Plover (Charadrius hiaticula) in breeding season on a pebble beach in the Cotentin, Manche, Normandy, France

832-401245 - Common starling (Sturnus vulgaris), old bird feeding young bird at the breeding cavity, Hesse, Germany, Europe

832-401244 - Common starling (Sturnus vulgaris), adult bird approaching breeding cavity with food in its beak, Hesse, Germany, Europe

832-400723 - Weavers (Ploceidae), birds nest, Namibia, Africa

832-400489 - Northern gannet (Morus bassanus) adult bird collecting nesting material amongst flowering Red campion plants on a clifftop, Yorkshire, England, United Kingdom, Europe

832-400441 - Yellow weaver bird, ploceidea, with spread open wings at its nest, Mombasa

832-400017 - Two storks in the nest mating. Philippsburg, Baden-Wuerttemberg, Germany, Europe

832-399534 - Puffin (Fratercula arctica), Puffin, nesting material in beak, Staple Island, Farne Islands Nature Reserve, Farne Islands, Northumberland, England, United Kingdom, Europe

832-399536 - Puffin (Fratercula arctica), Puffin on Bird Rock, Staple Island, Farne Islands Nature Reserve, Farne Islands, Northumberland, England, United Kingdom, Europe

832-398657 - Atlantic puffin (Fratercula arctica) on sea cliff top and great skua chasing gannet in seabird colony, Shetland Islands, Scotland, UK

832-398656 - Atlantic puffin (Fratercula arctica) on sea cliff top and flying gannets in seabird colony, Shetland Islands, Scotland, UK

832-398655 - Atlantic puffin (Fratercula arctica) on sea cliff top watching gannet flying by in seabird colony, Scotland, UK

832-398654 - Two Atlantic puffins (Fratercula arctica) on sea cliff top and gannet flying by in seabird colony, Shetland Islands, Scotland, UK

832-398653 - Atlantic puffin (Fratercula arctica) on sea cliff top and flying gannets in seabird colony, Shetland Islands, Scotland, UK

832-397643 - Female pike-perch (Sander lucioperca) guarding clutch in nest on lake bottom, quarry pond with fresh water, Germany, Europe

832-397244 - Raccoon (Procyon lotor), fawn looking out of its tree hollow, Hesse, Germany, Europe

832-397245 - Raccoon (Procyon lotor), young and fawn looking out of their tree den, Hesse, Germany, Europe

832-397032 - Great crested grebe (Podiceps cristatus) on nest with young bird, Hesse, Germany, Europe

832-397031 - Great crested grebe (Podiceps cristatus) on nest with young bird in plumage, turning eggs, Hesse, Germany, Europe

832-396812 - Northern gannet (Morus bassanus), bird lying on nest of fishing nets, plastic waste pollution, Helgoland, Schleswig-Holstein, Germany, Europe

832-396792 - Northern northern gannet (Morus bassanus), confrontation between different animals on the breeding rock, Helgoland, Schleswig-Holstein, Germany, Europe