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Grey-headed Flying Fox, (Ptereopus poliocephalus), Botanical Garden, New South Wales, Sydney, Australia
Ruddy-headed goose (Chloephaga rubidiceps), Sea Lion Island, Falkland Islands, South America
Adult grey-headed albatross, Thalassarche chrysostoma, on nest on tussock grass at Elsehul, South Georgia Island, Atlantic Ocean
Adult grey-headed albatross, Thalassarche chrysostoma, in flight at Elsehul, South Georgia Island, Atlantic Ocean
Adult grey-headed albatross, Thalassarche chrysostoma, returning to nest site at Elsehul, South Georgia Island, Atlantic Ocean
Two white-headed buffalo-weaver (Dinemellia dinemelli), Serengeti National Park, Tanzania, East Africa, Africa
Male Mwanza flat-headed agama (Agama mwanzae), Serengeti National Park, Tanzania, East Africa, Africa
Male Mwanza flat-headed agama (Agama mwanzae), Serengeti National Park, Tanzania, East Africa, Africa
Red-headed vulture (Asian king vulture) (Indian black vulture) (Pondicherry vulture) (Sarcogyps calvus), Ranthambhore, Rajasthan, India, Asia
Grey-headed flying fox (Pteropus poliocephalus), Yarra Bend Park, Melbourne,Victoria, Australia, Pacific
Golden headed lion tamarin (Leontopithecus chrysomelas) in the trees, controlled conditions, United Kingdom, Europe
Black-headed heron (Ardea melanocephala), Addo Elephant National Park, South Africa, Africa
Black-headed heron (Ardea melanocephala) with its bill open, Addo Elephant National Park, South Africa, Africa
Ram headed sphinxes leading up to the first pylon at Karnak Temple, Karnak, Thebes, UNESCO World Heritage Site, Egypt, North Africa, Africa
Yellow-headed blackbird (Xanthocephalus xanthocephalus), Yellowstone National Park, Wyoming, United States of America, North America
View of life along the Tonle Sap River headed towards Phnom Penh, Cambodia, Indochina, Southeast Asia, Asia
View of life along the Tonle Sap River headed towards Phnom Penh, Cambodia, Indochina, Southeast Asia, Asia
Double-headed Jaguar, Palace of the Governor, Uxmal, Mayan archaeological site, UNESCO World Heritage Site, Yucatan, Mexico, North America
Hathor-headed columns, Hypostyle Hall, Temple of Hathor, Dendera, Egypt, North Africa, Africa
Red bald-headed Uakari monkey also known as British Monkey (Cacajao calvus rubicundus), Amazon state, Brazil, South America
Red bald-headed Uakari monkey also known as British Monkey (Cacajao calvus rubicundus), Amazon state, Brazil, South America
Common agama (red-headed rock agama) (rainbow agama) (Agama agama), male, Ruaha National Park, Tanzania, East Africa, Africa
White-headed buffalo weaver (Dinemellia dinemelli), Serengeti National Park, Tanzania, East Africa, Africa
White-crowned lapwing (white-headed lapwing) (white-headed plover) (white-crowned plover) (Vanellus albiceps), Selous Game Reserve, Tanzania, East Africa, Africa
Mwanza flat-headed rock agama (Agama mwanzae), Serengeti National Park, Tanzania, East Africa, Africa
Yellow-headed Blackbird (Xanthocephalus xanthocephalus), female, Lac Le Jeune Provincial Park, British Columbia, Canada, North America
Yellow-headed Blackbird (Xanthocephalus xanthocephalus), female, Lac Le Jeune Provincial Park, British Columbia, Canada, North America
Adult grey-headed albatross, Thalassarche chrysostoma, on nest on tussock grass at Elsehul, South Georgia Island, Atlantic Ocean
Seven headed Naga snake guardian, Preah Tineang Tevea Vinichhay Throne Hall in the Royal Palace, City Centre, Phnom Penh, Cambodia, Indochina, Southeast Asia, Asia
Adult grey-headed albatross, Thalassarche chrysostoma, returning to nest site at Elsehul, South Georgia Island, Atlantic Ocean
Falcon headed Horus statue, Temple of Horus, Edfu, Egypt, North Africa
Short headed Damselfish, Amblypomacentrus breviceps, Ambon, Moluccas, Indonesia
Adult grey-headed albatross, Thalassarche chrysostoma, on nest on tussock grass at Elsehul, South Georgia Island, Atlantic Ocean
Male yellow-headed blackbird (Xanthocephalus xanthocephalus) dislaying, Yellowstone National Park, Wyoming, United States of America, North America
Adult grey-headed albatross, Thalassarche chrysostoma, on nest on tussock grass at Elsehul, South Georgia Island, Atlantic Ocean
Male yellow-headed blackbird (Xanthocephalus xanthocephalus), Bear River Migratory Bird Refuge, Utah, United States of America, North America
Adult grey-headed albatross, Thalassarche chrysostoma, on nest on tussock grass at Elsehul, South Georgia Island, Atlantic Ocean
Adult ruddy-headed goose (Chloephaga rubidiceps), Carcass Island, Falkland Islands, South Atlantic Ocean, South America
Grey-headed kingfisher (grey-hooded kingfisher) (gray-headed kingfisher) (gray-hooded kingfisher) (Halcyon leucocephala), Samburu National Reserve, Kenya, East Africa, Africa
Yellow-headed Caracara (Milvago chimachima), Cotswold Wildlife Park, Costswolds, Gloucestershire, England, United Kingdom, Europe
Ram headed sphinxes beyond the first pylon at Karnak Temple, Karnak, Thebes, UNESCO World Heritage Site, Egypt, North Africa, Africa
Leafcutter bee (Rhodanthidium siculum) foraging on round-headed knapweed flower (Centaurea sphaerocephala), Algarve, Portugal, Europe
Adult ruddy-headed goose (Chloephaga rubidiceps), Carcass Island, Falkland Islands, South Atlantic Ocean, South America
Male Yellow-Headed Blackbird (Xanthocephalus xanthocephalus), Yellowstone National Park, Wyoming, United States of America, North America
Red-headed finch (Paradise finch) (red-headed weaver) (Amadina erythrocephala), Kgalagadi Transfrontier Park, encompassing the former Kalahari Gemsbok National Park, South Africa, Africa
Red-headed agama (Agama agama) pair, Serengeti National Park, Tanzania, East Africa, Africa
Chestnut-headed bee-eater (merops leschanaulti), Yala National Park, Sri Lanka, Asia
Black-headed heron (Ardea melanocephala), Serengeti National Park, Tanzania, East Africa, Africa
Brown-headed cowbird (Molothrus ater), Yellowstone National Park, Wyoming, United States of America, North America
Juvenile yellow-headed caracara (Milvago chimachima), Pacaya-Samiria National Reserve, Loreto, Peru, South America
The Processional Avenue, lined with the ram-headed sphinxes, before the Temple of Karnak, Thebes, UNESCO World Heritage Site, Egypt, North Africa, Africa
Male grey-headed kingfisher (Halcyon leucocephala) at Curral Grande, Fogo Island, Cape Verde, Africa
An adult yellow-headed caracara (Milvago chimachima), Belluda Cano, Amazon Basin, Loreto, Peru, South America
Grey-headed Fish Eagle (Icthyophaga ichthyaetus) in flight, Sri Lanka
Black-headed ibis (Threskiornis melanocephalus) perched on a branch, Sri Lanka
Black-headed trogon (Trogon melanocephalus) at Lamanai Archaeological Reserve, Orange Walk District, Belize
Black-headed trogon (Trogon melanocephalus) at Lamanai Archaeological Reserve, Orange Walk District, Belize
Black-headed trogon (Trogon melanocephalus) at Lamanai Archaeological Reserve, Orange Walk District, Belize
Adult hairy-headed leaf-cutter ants, Atta cephalotes, carrying leaves within the Pacaya Samiria Preserve, Peru.
Adult yellow-headed caracara, Daptrius chimachima, in flight within the Pacaya Samiria Preserve, Peru.
Adult yellow-headed caracara, Daptrius chimachima, perched in a tree within the Pacaya Samiria Preserve, Peru.
Adult yellow-headed caracara, Daptrius chimachima, perched in a tree within the Pacaya Samiria Preserve, Peru.
Adult female white-headed marsh tyrant, Arundinicola leucocephala, perched within the Pacaya Samiria Preserve, Peru.
Adult male white-headed marsh tyrant, Arundinicola leucocephala, perched in a tree within the Pacaya Samiria Preserve, Peru.
Adult female white-headed marsh tyrant, Arundinicola leucocephala, feeding its chick within the Pacaya Samiria Preserve, Peru.
A group of adult dusky-headed parakeets, Aratinga weddellii, on a tree in the Pacaya Samiria Preserve, Peru.
A group of adult dusky-headed parakeets, Aratinga weddellii, on a tree in the Pacaya Samiria Preserve, Peru.
A pair of adult dusky-headed parakeets, Aratinga weddellii, on a tree in the Pacaya Samiria Preserve, Peru.
A pair of adult dusky-headed parakeets, Aratinga weddellii, perched in a tree, Pacaya Samiria Preserve, Peru.
Adult blue-headed parrot, Pionus menstruus, feeding in a tree within the Pacaya Samiria Preserve, Peru.
Grey-headed kingfisher (Halcyon leucocephala) with lizard at Curral Grande, Fogo Island, Cape Verde, Africa
Ram headed sphinx along the path connecting the Karnak Temple Complex to Luxor Temple, Thebes, UNESCO World Heritage Site, Egypt, North Africa, Africa
Black-headed weaver, Pain Upe wildlife reserve, Uganda
Adult grey-headed albatross (Thalassarche chrysostoma) (grey-headed mollymawk), Elsehul, South Georgia, Polar Regions
Black-headed heron (Ardea melanocephala), Addo Elephant National Park, South Africa, Africa
Adult Grey-headed Albatross (Thalassarche chrysostoma) courtship display at Elsehul, South Georgia
Adult Grey-headed Albatross (Thalassarche chrysostoma) resting on the sea at Elsehul, South Georgia
Adult Grey-headed Albatross (Thalassarche chrysostoma) in flight near nesting site at Elsehul, South Georgia
Hayagriva, horse-headed incarnation of Hindu Lord Vishnu, with garland and red powder, Hayagriva Madhava Temple, Hajo, Assam, India, Asia
Stripe-headed sparrow (Peucaea ruficauda) breeds from Mexico to north Costa Rica, eats seeds and insects, Esperanza, Guanacaste, Costa Rica
Round-headed katydid (bush cricket) (Amblycorypha), earhole in forelegs, superb leaf mimic with leg scraping song, Guanacaste, Costa Rica
A Black-headed Gull (Larus ridibundus), on Brownsea Island, a nature reserve in Poole Harbour, Dorset, England, United Kingdom, Europe
An adult blue-headed quail-dove (Starnoenas cyanocephala), Zapata National Park, endemic to Cuba, Cuba, West Indies, Caribbean, Central America
Close-up of a ram-headed sphinx of the Processional Avenue, at the Temple of Karnak, Thebes, UNESCO World Heritage Site, Egypt, North Africa, Africa
Gray-headed Chachalaca (Ortalis cinereiceps), Boca Tapada, Alajuela Province, Costa Rica, Central America
Ganesha (Ganapati) the elephant headed Hindu god, Sri Mahamariamman Hindu Temple, Kuala Lumpur. Malaysia, Southeast Asia, Asia
White-headed capuchin (Cebus imitator), Arenal Volcano National Park, near La Fortuna, Alajuela Province, Costa Rica, Central America
Grey-headed Chachalaca (Ortalis cinereiceps), Boca Tapada, Alajuela Province, Costa Rica, Central America
Black-headed gull (Chroicocephalus ridibundus) in winter plumage in this popular coastal town, Aberaeron, Ceredigion, Wales, United Kingdom, Europe
Ganesh (Ganapati), elephant-headed Hindu god, wall painting, Pema Osel Ling Monastery, Dakshinkali, Kathmandu, Nepal, Asia
Adult olive-headed sea snake (Hydrophis major), swimming on Ningaloo Reef, Western Australia, Australia, Pacific
Adult olive-headed sea snake (Hydrophis major), swimming on Ningaloo Reef, Western Australia, Australia, Pacific
Black-headed gull Chroicocephalus ridibundus), summer plumage, hovering over flowering cotton grass, Finland, Europe
View of Ram headed sphinxes leading up to the first pylon at Karnak Temple, Karnak, Thebes, UNESCO World Heritage Site, Egypt, North Africa, Africa
View of Ram headed sphinxes leading up to Ramesses III Temple at Karnak Temple, Karnak, Thebes, UNESCO World Heritage Site, Egypt, North Africa, Africa
Row of Ram-Headed Sphinxes, Corridor Entrance, Karnak Temple Complex, UNESCO World Heritage Site, Luxor, Egypt, North Africa, Africa
Gate to the Temple of Khonsu, Ram-Headed Sphinx in foreground, Karnak Temple Complex, UNESCO World Heritage Site, Luxor, Egypt, North Africa, Africa
Adult grey-headed albatross, Thalassarche chrysostoma, in flight, in Fortuna Bay, South Georgia Island, Southern Ocean.
Adult grey-headed albatross, Thalassarche chrysostoma, cleaning itself in Fortuna Bay, South Georgia Island.
Adult grey-headed albatross, Thalassarche chrysostoma, cleaning itself in Fortuna Bay, South Georgia Island.