Andean condor (Vultur gryphus) flying over Torres del Paine National Park, Chilean Patagonia, Chile, South America

Ruppells griffon vulture (Gyps rueppellii) adult and immature at a wildebeest carcass, Serengeti National Park, Tanzania, East Africa, Africa

Woodland kingfisher (Halcyon senegalensis), Serengeti National Park, Tanzania, East Africa, Africa

Common ostrich (Struthio camelus) male with two chicks, Kgalagadi Transfrontier Park encompassing the former Kalahari Gemsbok National Park, South Africa, Africa

Von Der Decken's hornbill (Tockus deckeni), male, Ngorongoro Conservation Area, UNESCO World Heritage Site, Serengeti, Tanzania, East Africa, Africa

African pipit (grassland pipit) (grassveld pipit) (Anthus cinnamomeus), Ngorongoro Conservation Area, UNESCO World Heritage Site, Serengeti, Tanzania, East Africa, Africa

Diederik cuckoo (Chrysococcyx caprius), male, Ngorongoro Conservation Area, UNESCO World Heritage Site, Serengeti, Tanzania, East Africa, Africa

Hooded vulture (Necrosyrtes monachus) in mixed juvenile and adult plumage with a prize from a wildebeest kill, Ngorongoro Conservation Area, UNESCO World Heritage Site, Serengeti, Tanzania, East Africa, Africa

Southern pale chanting goshawk (Melierax canorus) hunting, Kgalagadi Transfrontier Park encompassing the former Kalahari Gemsbok National Park, South Africa, Africa

Superb starling (Lamprotornis superbus) with an insect, Ngorongoro Conservation Area, UNESCO World Heritage Site, Serengeti, Tanzania, East Africa, Africa

Black-breasted snake eagle (black-chested snake eagle) (Circaetus pectoralis) in flight, immature, Kgalagadi Transfrontier Park, encompassing the former Kalahari Gemsbok National Park, South Africa, Africa

Hooded vulture (Necrosyrtes monachus) in flight on approach to landing, Ngorongoro Conservation Area, Serengeti, Tanzania, East Africa, Africa

Marabou stork (Leptoptilos crumeniferus), Ngorongoro Conservation Area, UNESCO World Heritage Site, Serengeti, Tanzania, East Africa, Africa

Southern pale chanting goshawk (Melierax canorus) with a skink, Kgalagadi Transfrontier Park encompassing the former Kalahari Gemsbok National Park, South Africa, Africa

Fork-tailed drongo (Dicrurus adsimilis), Kgalagadi Transfrontier Park encompassing the former Kalahari Gemsbok National Park, South Africa, Africa

Woman with thanaka on her cheeks and trapped birds in a basket on her head, asking for people to pay to set them free, Mandalay, Myanmar (Burma), Asia

Robin (Erithacus rubecula), Lake District, Cumbria, England, United Kingdom, Europe

Golden plover (Pluvialis apricaria), North Pennines, England, United Kingdom, Europe

Puffin (Fratercula), Farne Islands, Northumberland, England, United Kingdom, Europe

Stonechat (Saxicola rubicola), Middlesborough, England, United Kingdom, Europe

Kingfisher (Alcedo atthis), Yorkshire, England, United Kingdom, Europe

Kingfisher (Alcedo atthis), Yorkshire, England, United Kingdom, Europe

Arctic tern (Sterna paradisaea), Farne Islands, Northumberland, England, United Kingdom, Europe

Common Raven (Corvus corax), Yellowstone National Park, Wyoming, United States of America, North America

Red grouse (Lagopus lagopus), North Pennine Moors, County Durham, England, United Kingdom, Europe

A hummingbird in Castara Bay on the Caribbean island of Tobago, Trinidad and Tobago, West Indies, Caribbean, Central America

Toucan in the Valle de Cocora, Colombia, South America

Female Nyala (Tragelaphus angasii), Mkhaya Game Reserve, Swaziland, Africa

Adult Cocoi heron (Ardea cocoi) in flight on the Pacaya River, Upper Amazon River Basin, Loreto, Peru, South America

Adult scarlet macaw (Ara macao), Amazon National Park, Loreto, Peru, South America

Adult scarlet macaw (Ara macao), Amazon National Park, Loreto, Peru, South America

Adult scarlet macaw (Ara macao), Amazon National Park, Loreto, Peru, South America

Puffin (Fratercula arctica) with sand eels, Farne Islands, Northumberland, England, United Kingdom, Europe

African fish eagle (Haliaeetus vocifer) drinking, Zimanga private game reserve, KwaZulu-Natal, South Africa, Africa

Secretarybird (Sagittarius serpentarius), Kgalagadi Transfrontier Park, South Africa, Africa

Yellowbilled stork (Mycteria ibis), Zimanga private game reserve, KwaZulu-Natal, South Africa, Africa

Golden eagle (Aquila chrysaetos), Sweden, Scandinavia, Europe

Golden eagle (Aquila chrysaetos), Sweden, Scandinavia, Europe

Golden eagle (Aquila chrysaetos), Sweden, Scandinavia, Europe

Jay (Garrulus glandarius), Sweden, Scandinavia, Europe

Jay (Garrulus glandarius), Sweden, Scandinavia, Europe

Great spotted woodpecker (Dendrocopos major), Sweden, Scandinavia, Europe

Golden eagle (Aquila chrysaetos), Sweden, Scandinavia, Europe

Golden eagle (Aquila chrysaetos), Sweden, Scandinavia, Europe

Golden eagle (Aquila chrysaetos), Sweden, Scandinavia, Europe

Golden eagle (Aquila chrysaetos), Sweden, Scandinavia, Europe

Golden eagle (Aquila chrysaetos), Sweden, Scandinavia, Europe

Greylag goose (Anser anser), United Kingdom, Europe

Golden eagle (Aquila chrysaetos), Sweden, Scandinavia, Europe

Golden eagle (Aquila chrysaetos), Sweden, Scandinavia, Europe

Jay (Garrulus glandarius) bathing, Sweden, Scandinavia, Europe

Jay (Garrulus glandarius), Sweden, Scandinavia, Europe

Red crowned crane (Japanese crane) (Grus Japonensis), United Kingdom, Europe

Colony of black-browed albatross (Thalassarche melanophris), Saunders Island, Falklands, South America

Adult southern rockhopper penguin (Eudyptes chrysocome) at breeding colony on Saunders Island, Falkland Islands, South America

Adult king penguins (Aptenodytes patagonicus) on the grassy slopes of Saunders Island, Falkland islands, South America

Adult king penguins (Aptenodytes patagonicus) on the grassy slopes of Saunders Island, Falkland Islands, South America

Toco Toucan (Ramphastos toco), Pantanal, Mato Grosso, Brazil, South America

African penguin (jackass penguin) (Spheniscus demersus), Boulders Beach. Boulders Penguin Colony, Simon's Town, Cape Peninsula, South Africa, Africa

A wild adult male bee hummingbird (Mellisuga helenae), attracted to hand-held flower near Playa Larga, Cuba, West Indies, Caribbean, Central America

A wild adult male bee hummingbird (Mellisuga helenae), displaying vivid coloration near Playa Larga, Cuba, West Indies, Caribbean, Central America

South African penguin (jackass penguin) at Boulders Beach in Simon's Bay on the Cape Peninsula, South Africa, Africa

Magellanic penguin (Spheniscus magellanicus) calling, giving a warning call, Patagonia, Chile, South America

Penguins swimming in on the tide at Boulders Beach, Boulders Penguin Colony, Simon's Town, Cape Peninsula, South Africa, Africa

A forest bird at Birds of Eden in Plettenberg Bay, South Africa, Africa

Two Rhinos and an oxpecker bird in the Amakhala Game Reserve in the Eastern Cape, South Africa, Africa

Grey Crowned Crane (Balearica regulorum), Uganda, Africa

Grey crowned crane (Balearica regulorum), Uganda, Africa

African Open-billed Stork (African openbill) (Openbill stork) (Aanastomus lamelligerus), Uganda, Africa

Red throated Bee-eater (Merops bulocki), Uganda, Africa

Shoebill (Balaeniceps rex), Uganda, Africa

Shoebill (Balaeniceps rex), Uganda, Africa

Marabou Stork (Leptoptilos crumenifer), Uganda, Africa

Black winged stilt (Himantopus himantopus), Ranthambhore, Rajasthan, India, Asia

Long-eared owl (Asio otus), captive, United Kingdom, Europe

Long-eared owl (Asio otus), captive, United Kingdom, Europe

Kori bustard (Ardeotis kori) male courtship display, Kgalagadi Transfrontier Park, Northern Cape, South Africa, Africa

Barnacle goose (Branta leucopsis), Spitsbergen, Svalbard, Arctic, Norway, Europe

Blue-footed booby (Sula nebouxii) pair in courtship display on San Cristobal Island, Galapagos, Ecuador, South America

Blue-footed booby (Sula nebouxii) pair in courtship display on San Cristobal Island, Galapagos, Ecuador, South America

Blue-footed booby (Sula nebouxii) pair in courtship display on North Seymour Island, Galapagos, Ecuador, South America

A bateleur eagle (Terathopius ecaudatus) at a water pool, Tsavo, Kenya, East Africa, Africa

Yellow-billed oxpeckers (Buphagus africanus) on the back of an African buffalo (Syncerus caffer), Tsavo, Kenya, East Africa, Africa

Adult waved albatross (Phoebastria irrorata), on Punta Suarez, Isla Espanola, Galapagos, UNESCO World Heritage Site, Ecuador, South America

Nazca booby (Sula granti), pair at Punta Suarez, Isla Espanola, Galapagos, UNESCO World Heritage Site, Ecuador, South America

Puffin, Alaska Sealife Centre, Coldwater Marine Science Facility, Seward, Resurrection Bay, Kenai Peninsula, Alaska, United States of America, North America

Largest Asian Stupa, Boudhanath Stupa, UNESCO World Heritage Site, Kathmandu, Nepal, Asia

Morning landscape in the Vermilion Lakes, Banff National Park, UNESCO World Heritage Site, Canadian Rockies, Alberta, Canada, North America

Lappet faced vultures on a kill, Masai Mara, Kenya, East Africa, Africa

Plaza de Armas, Arequipa, Peru, South America

Cathedral, Plaza de Armas, Arequipa, Peru, South America

Humboldt penguins (Spheniscus humboldt) on the rock in Lagunillas, Paracas National Reserve, Ica Region, Peru, South America

The Bird Geoglyph, aerial view, Nazca, UNESCO World Heritage Site, Ica Region, Peru, South America

Ballestas Islands near Paracas, Ica Region, Peru, South America

The Condor Geoglyph, aerial view, Nazca, UNESCO World Heritage Site, Ica Region, Peru, South America

A spotted eagle-owl (Bubo africanus) perching on a tree, Botswana, Africa

A European goldfinch (Carduelis carduelis), on a tree log, Slovenia, Europe

Pilgrims on a boat on the River Ganges, Varanasi, Uttar Pradesh, India, Asia

Tomb of Muhammad Shah, Lodi Gardens (Lodhi Gardens), New Delhi, India, Asia

Indian Peacock (Pavo Cristatus) plumage display in the grounds of Barcelona Zoo, Catalonia, Spain, Europe