King penguin (Aptenodytes patagonicus) breeding and nesting colony on South Georgia Island, Southern Ocean, Polar Regions

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

Male Black-Bellied Bustard (Black-Bellied Korhaan) (Eupodotis melanogaster), Kruger National Park, South Africa, Africa

Black-throated sparrow (Amphispiza bilineata), Rockhound State Park, New Mexico, United States of America, North America

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

Black-throated sparrow (Amphispiza bilineata), The Pond, Amado, Arizona, United States of America, North America

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

Double-crested cormorant (Phalacrocorax auritus), Sonny Bono Salton Sea National Wildlife Refuge, California, United States of America, North America

King penguin (Aptenodytes patagonicus) chick molting its downy feathers at Gold Harbor, South Georgia, Polar Regions

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

Hooded oriole (Icterus cucullatus), The Pond, Amado, Arizona, United States of America, North America

Female acorn woodpecker (Melanerpes formicivorus), Chiricahuas, Coronado National Forest, Arizona, United States of America, North America

Male ruddy duck (Oxyura jamaicensis) swimming, Sweetwater Wetlands, Tucson, Arizona, United States of America, North America

Black-shouldered kite (Elanus caeruleus) pair mating, Kgalagadi Transfrontier Park, encompassing the former Kalahari Gemsbok National Park, South Africa, Africa

Northern black korhaan (Eupodotis afraoides), immature male, Kgalagadi Transfrontier Park encompassing the former Kalahari Gemsbok National Park, South Africa, Africa

Yellow-billed kite (Milvus parasitus) and black kite (Milvus migrans) perching on a tree, Khwai Concession Area, Okavango Delta, Botswana, Africa

African openbill (Anastomus lamelligerus), Khwai Concession Area, Okavango Delta, Botswana, Africa

Black-collared Hawk (Busarellus nigricollis) in flight, Pantanal, Mato Grosso, Brazil, South America

Eastern kingbird (Tyrannus tyrannus), Pawnee National Grassland, Colorado, United States of America, North America

Red-winged blackbird (Agelaius phoeniceus) male, San Jacinto Wildlife Area, California, United States of America, North America

Black Winged Stilts, Himantopus himantopus, in water hole at Kutalpura Village in Rajasthan, Northern India

Black-Headed Ibis, Threskiornis melanocephalus, feeding in Ranthambhore National Park, Rajasthan, Northern India

Indian Black Kite raptor bird, Milvus Migrans, in the sky above Lake Pichola in first light of early morning, Udaipur, Rajasthan, India

Bald eagle, Haliaeetus leucocephalus, UK

Black swan, Cygnus atratus, with red beak in North Norfolk, UK

Indian Black Kite raptor bird, Milvus Migrans, in the sky above Lake Pichola in first light of early morning, Udaipur, Rajasthan, India

Black-Headed Ibis, Threskiornis melanocephalus, feeding in Ranthambhore National Park, Rajasthan, Northern India

Southern Cassowary bird, Queensland, Australia

A ceremonial guard at the Elysee Palace in Paris, France.

Magellanic Penguin showing natural oil on its feathers at Sea Lion Island, Falkland Islands, South Atlantic.

Mask in San Marco Square during Venice Carnival, Venice, UNESCO World Heritage Site, Veneto, Italy, Europe

Montserrat, British Overseas Territory, West Indies, Caribbean, Central America

Samba Dancer at the Carnival Parade in Rio de Janeiro, Brazil, South America

Samba Dancer at the Carnival Parade in Rio de Janeiro, Brazil, South America

Youngsters at a Bicentennial parade in Sydney, Australia

Bald eagle, Haliaeetus leucocephalus, UK

Black-winged Lapwing, Ngorongoro, Tanzania, East Africa

Montserrat, British Overseas Territory, West Indies, Caribbean, Central America

Black-Headed Ibis, Threskiornis melanocephalus, pair feeding in Ranthambhore National Park, Rajasthan, Northern India

Bald eagle, Haliaeetus leucocephalus, UK

Black-Headed Ibis, Threskiornis melanocephalus, in Ranthambhore National Park, Rajasthan, Northern India

Bald eagle, Haliaeetus leucocephalus, UK

Greater Black-Backed Gull by San Francisco bay, California, United States of America

Float at Loi Krathong festival, Chiang Mai, Northern Thailand, Thailand, Southeast Asia, Asia

Float at Loi Krathong festival, Chiang Mai, Northern Thailand, Thailand, Southeast Asia, Asia

Immature Black Crake on water cabbage, Grumeti, Tanzania, East Africa

Black Drongo, Dicrurus macrocercus, bird in Ranthambhore National Park, Rajasthan, Northern India

Greater Black-Backed Gull by San Francisco bay, California, United States of America

Greater Black-Backed Gull by San Francisco bay, California, United States of America

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

Mute Swan, Hoeckerschwan, Cygnus olor, breeding, Switzerland

Mute Swan, Hoeckerschwan, Cygnus olor, breeding, Switzerland

Mute Swan, Hoeckerschwan, Cygnus olor, 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, breeding, Switzerland

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

Fan coral (Subergorgia sp.), with black feather stars attached, Namu atoll, Marshall Islands, Pacific

Fan coral (Subergorgia sp.), with black feather stars attached, Namu atoll, Marshall Islands, Pacific

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

A pair of Black guillemots bonding in Oban, Scotland, United Kingdom, Europe

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.

Adult black guillemot (Cepphus grylle) taking flight with fish in the Svalbard Archipelago in the Barents Sea, Norway

Black Headed Gull (Larus ridibundas) and Herring Gull (Larus argentatus) juvenile taking off from pond with winter plumage . Maryhill Canal, Strathclyde, Scotland, UK

Adult black guillemot (Cepphus grylle) taking flight in the Svalbard Archipelago in the Barents Sea, Norway

Black Headed Gull (Larus ridibundas) taking off from pond with winter plumage . Maryhill Canal, Strathclyde, Scotland, UK

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

Siskins (Carduelis spinus) feeding on a garden feeder in Ambleside, Cumbria, England, United Kingdom, Europe

Close-up of a black necked stork (Jabiru) (Ephippiorhynchus asiaticus) in Hartleys Crocodile farm near Cairns, Queensland, Australia, Pacific

Black-Headed Gull (larus ridibundus) taking of from a city pond in winter, female tufted duck in fore ground. Glasgow, Hyndland Park, Argyll, Scotland, UK

Adult black guillemot (Cepphus grylle) in summer plumage near Vigur Island in Isafjardardjup Bay, Iceland

Adult black guillemot (Cepphus grylle) in summer plumage near Vigur Island in Isafjardardjup Bay, Iceland

Black-Headed Gull (larus ridibundus) taking off from ice on a frozen pond in Glasgow city centre . Glasgow, Hyndland Park, Argyll, Scotland, UK

A Black Headed Gull (Larus ridibundus) in breeding plumage, Moray Firth, Scotland.

Black Headed Gull (Larus ridibundas) taking off from pond with winter plumage . Maryhill Canal, Strathclyde, Scotland, UK

Adult black-browed albatross (Thalassarche melanophrys) preening its feathers at Devil's Nose on New Island in the Falkland Island Group, Falklands.

Black-Headed Gull (larus ridibundus) taking off from ice on a frozen pond in Glasgow city centre . Glasgow, Hyndland Park, Argyll, Scotland, UK

Eurasian coot on ice at Martin Mere bird reserve near Ormskirk, Lancashire, England, United Kingdom, Europe

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

Black-Headed Gull (larus ridibundus) taking off from ice on a frozen pond in Glasgow city centre . Glasgow, Hyndland Park, Argyll, Scotland, UK

Black-Headed Gull (larus ridibundus) taking of from ice on a frozen pond in Glasgow city centre front on view. Glasgow, Hyndland Park, Argyll, Scotland, UK

Black-Headed Gull (larus ridibundus) taking of from ice on a frozen pond in Glasgow city centre front on view. Glasgow, Hyndland Park, Argyll, Scotland, UK

Black-Headed Gull (larus ridibundus) flying over a city pond in winter. Glasgow, Hyndland Park, Argyll, Scotland, UK

Black father and teenage children in traditional clothing

Apache man and boy wearing traditional regalia

Apache man dancing in traditional regalia

Smiling Mixed Race girl wearing hat and coat in winter

Mixed Race girl covering eyes with peacock feathers

Drake Wood Duck

Drake Wood Duck

Hairy woodpecker - female

Eastern wild turkey in northern Wisconsin.

Common Loon

Hairy woodpecker

Boy with red Headband, Aborigine, Body painting, Laura Dance Festival, Cape York Peninsula, Queensland, Australia

Woman in carnival costume, Brazilian dance troupe, carnival, Rio de Janeiro, Brazil

Woman in costume dancing at Mardi Gras, Carnival, Port of Spain, Trinidad and Tobago, Caribbean

3 Brazilian Samba dancers, Carnival of Cultures, annual internationally known colourful street parade at Whitsun with about 100 groups and floats taking part, Kreuzberg, Berlin, Germany, Europe

Brazilian Samba dancer, Carnival of Cultures, annual internationally known colourful street parade at Whitsun with about 100 groups and floats taking part, Kreuzberg, Berlin, Germany, Europe