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

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

Adult Arctic skua (Stercorarius parasiticus) in flight in the Svalbard Archipelago, Norway

Adult arctic tern (Sterna paradisaea) male bringing female a fish, Spitsbergen Island in the Svalbard Archipelago, Norway

Brunnichs guillemot (Uria lomvia) in flight at Cape Fanshawe in the Svalbard Archipelago, Norway

Brunnichs guillemot (Uria lomvia) pair taking flight at Cape Fanshawe in the Svalbard Archipelago, Norway

Adult great skua (Stercorarius skua) being harassed by Arctic terns (Sterna paradisaea) guarding their nest sites, Svalbard, Norway

Adult black-legged kittiwakes (Rissa tridactyla) in flight in the Svalbard Archipelago, Barents Sea, Norway

Brunnichs guillemots (Uria lomvia) in flight at Cape Fanshawe in the Svalbard Archipelago, Norway

Brunnichs guillemot (Uria lomvia) in flight at Cape Fanshawe in the Svalbard Archipelago, Norway

Young male polar bear (Ursus maritimus), feeding on a fin whale carcass in Holmabukta in the Svalbard Archipelago, Norway

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

Adult black-browed albatross (Thalassarche melanophrys), close up of tail at nesting site on New Island, Falklands, South America

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

Adelie penguin (Pygoscelis adeliae), feeding chick at breeding colony at Brown Bluff, Antarctic Peninsula, Antarctica, Polar Regions

Adult black-legged kittiwake (Rissa tridactyla) in combat with a second kittiwake near Alexander Island, Franz Josef Land, Russia, Arctic Ocean, Eurasia

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 Swallow-tailed gull (Creagrus furcatus) in flight 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

Adult Nazca booby (Sula grantii) pair in courtship 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 Antarctic tern (Sterna vittata) resting on the National Geographic Explorer near Tristan da Cunha, South Atlantic Ocean

Chinstrap penguin (Pygoscelis antarctica) breeding and molting at Half Moon Island, Antarctica, Southern Ocean, Polar Regions

Northern giant petrels (Macronectes halli) fighting over the scavenging rights to a dead elephant seal pup at Royal Harbor, South Georgia

Adult gentoo penguin (Pygoscelis papua) with minutes-old newly hatched chick at Gold Harbor on South Georgia

An adult Pacific reef heron (Egretta sacra), hunting for prey on Montgomery Reef, Kimberley, Western Australia, Australia, Pacific

Adult Imperial Shag (Phalacrocorax (atriceps) atriceps) exhibiting intense breeding plumage, New Island, Falkland Islands

An adult anhinga (Anhinga anhinga), taking flight on New River near the Mesoamerican archaeological site of Lamanai, Belize

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

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

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

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

African openbill (Anastomus lamelligerus), Zimanga Game Reserve, KwaZulu-Natal, South Africa, Africa

Adult brown skuas (Catharacta antarctica) feeding on a penguin carcass near the Antarctic peninsula, Antactica, Polar Regions

Adult American oystercatcher (Haematopus palliatus galapagensis) feeding chick along the shoreline on Bartolome Island in the Galapagos Island Group, UNESCO World Heritage Site, Ecuador, South America

Adult Galapagos barn owl (Tyto alba punctatissima) sleeping during the day on Santa Cruz Island, Galapagos, UNESCO World Heritage Site, Ecuador, South America

Adult gentoo penguin (Pygoscelis papua) with minutes-old newly hatched chick at Gold Harbor on South Georgia

Adult gentoo penguin (Pygoscelis papua) with minutes-old newly hatched chick at Gold Harbor on South Georgia

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

Three swallows perching, bird on the wire, in County Clare, West of Ireland

Great Spotted Woodpecker makes nesting hole in Poplar tree , Hampstead, London, United Kingdom

Blue-footed Booby bird feeds juvenile on Galapagos Islands, Ecuador

Great Spotted Woodpecker makes nesting hole in Poplar tree , Hampstead, London, United Kingdom

King penguin (Aptenodytes patagonicus) with introduced reindeer at breeding and nesting colony at St. Andrews Bay on South Georgia, Southern Ocean.

Sub-adult Humpback Whale, Megaptera novaeangliae, breaching in northern Gulf of California, Mexico

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

Adult red-footed booby (Sula sula) being attacked in flight by a great frigatebird (Fregata minor), Galapagos Island Archipelago, Ecuador

Black-browed Albatross (Thalassarche melanophrys) mating ritual in the Falkland Islands.

Adult Southern Rockhopper Penguins (Eudyptes chrysocome chrysocome) in the Falkland Islands. This is the smallest yellow-crested, black-and-white penguin in the genus Eudyptes. It reaches a length of 45-58 cm (18-23 in) and typically weighs 2-3.4 kg (4.4-7.5 lb), although there are records of exceptionally large rockhoppers weighing 5 kg (11 lbs). Their common name refers to the fact that unlike many other penguins which negotiate obstacles by sliding on their bellies or by awkward climbing using their flipper-like wings as aid, Rockhoppers will try to jump over boulders and across cracks. This behavior is by no means unique to this species however - at least the other "crested" penguins of the genus Eudyptes hop around rocks too. Southern Rockhopper Penguins have a global population of roughly 1 million pairs, perhaps a bit more. About two-thirds of the global population belongs to E. c. chrysocome which breeds on the Falkland Islands and on islands off Argentina and southern Chile. The Southern Rockhopper Penguin is classified as Vulnerable species by the IUCN.

Adult red-footed booby (Sula sula) returning to the nest site with nest building material in the Galapagos Island Archipelago, Ecuador

Blue-footed booby (Sula nebouxii) courtship behavior in the Galapagos Island Archipelago, Ecuador

Adult female leopard seal (Hydrurga leptonyx) killing and eating a juvenile Ad?lie penguin at Brown Bluff near the Antarctic Peninsula, Southern Ocean

Sub-adult Humpback Whale, Megaptera novaeangliae, breaching in northern Gulf of California, Mexico

Sub-adult Humpback Whale, Megaptera novaeangliae, surface lunge-feeding on krill in northern Gulf of California, Mexico

Adult wandering albatross (Diomedea exulans) exhibiting courtship behavior on Prion Island, Southern Atlantic Ocean

Gentoo penguin (Pygoscelis papua) mating behavior at Jougla Point on Wiencke Island, Antarctica, Southern Ocean

Adult wandering albatross (Diomedea exulans) exhibiting courtship behavior on Prion Island, Southern Atlantic Ocean

Adult wandering albatross (Diomedea exulans) exhibiting courtship behavior on Prion Island, Southern Atlantic Ocean

Gentoo Penguin (Pygoscelis papua) creche (protective group of chicks while parents are at sea feeding) on the Antarctic Peninsula.

Adult red-footed booby (Sula sula) returning to the nest site with nest building material in the Galapagos Island Archipelago, Ecuador

Adult wandering albatross (Diomedea exulans) exhibiting courtship behavior on Prion Island, Southern Atlantic Ocean

Sub-adult Humpback Whale, Megaptera novaeangliae, surface lunge-feeding on krill in northern Gulf of California, Mexico

Pair of Skua's (Catharacta sp.) attacking and killing chinstrap penguin, Deception Island, Antarctica, Southern Ocean.

Adult wandering albatross (Diomedea exulans) exhibiting courtship behavior on Prion Island, Southern Atlantic Ocean

Gentoo Penguin (Pygoscelis papua) creche (protective group of chicks while parents are at sea feeding) walking in formation on the Antarctic Peninsula.

Adult red-footed booby (Sula sula) returning to the nest site with nest building material in the Galapagos Island Archipelago, Ecuador

Adult male long-tailed meadowlark (Sturnella loyca) in breeding plumage on New Island in the Falkland Islands, South Atlantic Ocean

Couple of brown booby (Sula leucogaster) displaying cooling behavior, St. Peter and St. Paul's rocks, Brazil, South America

Adult Adelie Penguin (Pygoscelis adeliae) stealing rocks for a nest near the Antarctic Peninsula.

Adult wandering albatross (Diomedea exulans) exhibiting courtship behavior on Prion Island, Southern Atlantic Ocean

Adult wandering albatross (Diomedea exulans) exhibiting courtship behavior on Prion Island, Southern Atlantic Ocean

Cory's Shearwaters Feeding with Spotted Dolphin, (Calonectris diomeda and Stenella frontalis). Azores (A4 only).

Southern giant petrel (Macronectes giganteus) white morph, and chinstrap penguins (Pygocelis antarctica), NB: penguins standing their ground against the petrel, antarctica, Southern Oceanl

Adult wandering albatross (Diomedea exulans) exhibiting courtship behavior on Prion Island, Southern Atlantic Ocean

Brown booby (Sula leucogaster) couple displaying nesting behavior, St. Peter and St. Paul's rocks, Brazil, South America

King penguin courtship behavior (Aptenodytes patagonicus) at the breeding and nesting colony at Salisbury Plains, Bay of Isles on South Georgia Island, Southern Ocean.

Loon and Chick

Cocoi heron taking off

Swainson's Hawk, Buteo swainsoni

Common Loon (Gavia immer), Canada

Common Loon (Gavia immer), Canada

Gentoo Penguin Ashore from Ocean Surf

Cassowary

Flamingo, Phoenicopterus ruber, USA, California, San Diego, SeaWorld

Brown Booby, Sula leucogaster, Bikini Atoll, Micronesia, Marshall Islands

White Stork (Ciconia ciconia) mating, white stork, Lake Duemmer, Lembruch, Lower Saxony, Germany, Europe

Natterjack toad (Bufo calamita), male calling, Thuringia, Germany, Europe

Kori Bustard (Ardeotis kori), male, in courtship display in Ndutu, Ngorongoro, Tanzania, Africa

Great Egret or Great White Egret (Casmerodius albus, Egretta alba), displaying on the nest, Florida, USA

Scarlet Macaws (Ara macao), adult pair perched on a banana tree, passing on a gift, Roatan, Honduras, Caribbean, Central America, Latin America

King penguins (Aptenodytes patagonicus), pair in courtship, Gold Harbour, South Georgia, Antarctica

Common starling (Sturnus vulgaris) feeding young bird at breeding cavity, North Rhine-Westphalia, Germany, Europe

Fighting Pheasants (Phasianus colchicus) on a cornfield during mating time

Aerial view of n (Morus bassanus) on the breeding rock Langanes with coast, Langanesbyggo, Norourland eystra, Iceland, Europe

White Stork (Ciconia ciconia) mating, white stork, Lake Duemmer, Lembruch, Lower Saxony, Germany, Europe

Great crested grebe (Podiceps cristatus) at the nest with young bird in plumage, Oldenburger Muensterland, Vechta, Lower Saxony, Germany, Europe

Common kingfisher (Alcedo atthis) with fish as prey, Naarden, Netherlands

Great crested grebe (Podiceps cristatus) copulating at the nest, Oldenburger Muensterland, Vechta, Lower Saxony, Germany, Europe

Black Grouse or Blackgame (Lyrurus tetrix), courting cock

Magnificent fregate bird (Fregata magnificens) sitting on brushwood and mating with bloated throat pouch, Genovesa Island, Tower Island, Galápagos Archipelago, Ecuador, South America