Rockhopper penguin (Eudyptes chrysocome) portrait, Rockhopper Point, Sea Lion Island, Falkland Islands, South America

Pied kingfisher (Ceryle rudis) with a fish, Kruger National Park, South Africa, Africa

Thick-billed raven (Corvus crassirostris), Simien Mountains National Park, Amhara region, North Ethiopia, Ethiopia, Africa

Thick-billed raven (Corvus crassirostris), Simien mountains National Park, Amhara region, North Ethiopia, Africa

Male saddle-billed stork (Ephippiorhynchus senegalensis), Ngorongoro Crater, Tanzania, East Africa, Africa

Elegant white swan gliding on serene blue water with a clear reflection and soft lighting, United Kingdom, Europe

Tawny eagle (Aquila rapax) in flight, Zimanga private game reserve, KwaZulu-Natal, South Africa, Africa

White-backed vulture (Gyps africanus) dominance display, Zimanga private game reserve, KwaZulu-Natal, South Africa, Africa

Grey crowned crane (Southern crowned crane) (Balearica regulorum), Ngorongoro Crater, Tanzania, East Africa, Africa

Zebras at the Nechisar National Park, Ethiopia, Africa

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), in Borgarfjaroarhofn, Iceland, Polar Regions

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

Black browed albatross snuggling in nest, Falkland Islands, South America

Gentoo penguin lying down in sleet, Antarctica, Polar Regions

Tourists walking to Lighthouse at Saaremaa Island, Estonia, Baltic States, Europe

Adelie penguin losing down feathers on ice, Antarctica, Polar Regions

An adult Sabine's Gull (Xema sabini) in melt water pool in the Svalbard Archipelago, Norway, Arctic, Europe

White-backed vultures (Gyps africanus) and a skinny African elephant (Loxodonta africana) at waterhole, Savuti, Chobe National Park, Botswana, Africa

White-backed vultures (Gyps africanus) perching on a tree top, Savuti, Chobe National Park, Botswana, Africa

Male Costa's hummingbird (Calypte costae), in Bahia Concepcion, Baja California Sur, Sea of Cortez, Mexico, North America

A Gila woodpecker (Melanerpes uropygialis), on perch, San Jose del Cabo, Baja California Sur, Sea of Cortez, Mexico, North America

Magdalena Island, Magallanes Region, Punta Arenas, Chile, South America

Magdalena Island, Magallanes Region, Punta Arenas, Chile, South America

Australasian darter bird (Anhinga novaehollandiae) drying wings, snake bird spreading wings, Poovar Island, Kerala, India, Asia

Magellanic penguin (Spheniscus magellanicus), Magdalena Island, Magallanes Region, Punta Arenas, Chile, South America

Black-faced sandgrouse (Pterocles decoratus), male, Ngorongoro Conservation Area, UNESCO World Heritage Site, Serengeti, Tanzania, East Africa, Africa

Magellanic penguins (Spheniscus magellanicus) molting feathers near gentoo penguin (Pygoscelis papua), on Saunders Island, West Falkland Islands, UK Overseas Protectorate, South America

Blacksmith Plover or Blacksmith Lapwing (Vanellus armatus), Kruger National Park, South Africa, Africa

Two ponies grazing on the moor, Dartmoor, Devon, United Kingdom

Burchell's Zebra and foal in Northern Botswana, Africa

Rock Shag Waterbird, Falkland Islands

Mute Swan, Hoeckerschwan, Cygnus olor, breeding, Switzerland

A Black Browed Albatross; Thalassarche melanophrys, flying in the Drake Passage, Sub-Antarctica.

Mute Swan, Hoeckerschwan, Cygnus olor, breeding, Switzerland

Caribbean, West Indies, Barbados, St Peter Parish, Green Pond, The Morgan Lewis Windmill, Renovated Recently, Cow At Fore

Mute Swan, Hoeckerschwan, Cygnus olor, breeding, Switzerland

Mute Swan, Hoeckerschwan, Cygnus olor, breeding, Switzerland

Mute Swan, Hoeckerschwan, Cygnus olor, breeding, Switzerland

Mute Swan, Hoeckerschwan, Cygnus olor, breeding, Switzerland

Mute Swan, Hoeckerschwan, Cygnus olor, Switzerland

Scuba diver watches hunting snappers (Lutjanus sp.), Beqa Lagoon, Viti Levu, Fiji, South Pacific, Pacific

A Guillemot (Uria aalge) covered in oil on a black sand volcanic beach at Vik, on Iceland's south coast, Iceland, Polar Regions

Bicolar Damselfish (Stegastes partitus), nice black & white fish over good corals, Bonaire, Caribbean

Chinstrap penguin (Pygoscelis antarctica) chick head detail at colony on Useful Island near the Antarctic Peninsula. There are an estimated 2 million breeding pairs of chinstrap penguins in the Antarctic peninsula region alone, perhaps as many as 7.5 million breeding pairs in all of Antarctica. Their name derives from the narrow black band under their heads which makes it appear as if they are wearing black helmets, making them one of the most easily identified types of penguin. Other names for them are "Ringed Penguins", "Bearded Penguins", and "Stonecracker Penguins" due to their harsh call. They grow to 68 cm (27 in). The average adult weight of a Chinstrap Penguin is 4.5 kg (10 lbs). Weight can range from 3 to 6 kg (6.6-13.2 lbs), with males being slightly larger and weight varying based on where the penguin is in the breeding cycle. Their diet consists of krill, shrimp, and fish. On land they build circular nests from stones, and lay two eggs, which are incubated by both the male and the female for shifts of five to ten days. They can also breed on icebergs, though they prefer non-icy conditions. The chicks hatch after about 35 days, and have fluffy gray backs and white fronts. The chicks stay in the nest for 20?30 days before they go to join a creche. At around 50?60 days old, they moult, gaining their adult plumage and go to sea. The Chinstrap Penguin was first described by German naturalist Forster in 1781. Its specific epithet was often seen as antarctica, however a 2002 review determined the genus Pygoscelis was masculine, and hence the correct binomial name is Pygoscelis antarcticus.

A Guillemot (Uria aalge) covered in oil on a black sand volcanic beach at Vik, on Iceland's south coast, Iceland, Polar Regions

A Guillemot (Uria aalge) covered in oil on a black sand volcanic beach at Vik, on Iceland's south coast, Iceland, Polar Regions

Black and white swans in the Bussaco Forest reserve in Portugal, Europe

rosebay willowherb

Naked Caucasian woman swimming underwater

Naked muscular Mixed Race woman bending forward

Naked muscular Mixed Race crouching in box

Naked muscular Mixed Race woman covering breasts in box

Naked Caucasian woman swimming underwater

Farmer showing rough hands

Circuit board in x-ray of skull

Caucasian man wearing American flag shirt

Multiple exposure of Caucasian woman swimming in pattern

Silhouette of finger on encrypted message

Tourists walking near ferris wheel, Paris, Ile-de-France, France,

Portrait of Caucasian father and daughter posing near vintage car

Caucasian woman wearing miniskirt and high heels

Smiling Caucasian woman standing on beach in bikini

Portrait of Caucasian girl in lake

Close up of serious Caucasian boy with freckles

Caucasian women wearing sweater hugging boy

Gate near ornate architecture

Sunset on bridge over river, Prague, Czech Republic

Mari backpacker walking in mountain valley

Mountain landscape at sunset

Naked muscular Mixed Race woman laying with legs raised

Fin of shark swimming in bathtub

Portrait of Caucasian brothers posing near house

Naked Caucasian woman with hands clasped behind neck

Double exposure of Caucasian couple and railing

Naked Caucasian woman swimming underwater

Clouds illuminated in colorful sunset sky

Falling ice cubes splashing into water and floating

Caucasian girl looking up

Caucasian boy wearing old-fashioned clothing tossing marble

Ladder leaning on stone wall near crucifix

Son covering eyes of father

Shipwreck on beach under clouds

Caucasian couple walking on beach

Portrait of smiling Caucasian girl wearing sweater

Caucasian woman with freckles leaning on window

Droplets under wire whisk

Portrait of serious naked Caucasian woman

Caucasian woman sitting in wardrobe wearing underwear

Silhouette of woman and tree near river at sunset

Polar bear walking on white background

Serious Caucasian teenager with freckles

Caucasian woman smoking cigarette

Caucasian teenage girls in forest

Caucasian teenage girl wearing sunglasses

Caucasian woman sitting in wardrobe wearing underwear

Caucasian girl hiding face in turtleneck

Caucasian girl tossing hair in boat

Caucasian woman standing in wardrobe wearing underwear

Sunset over desert landscape