Male Eastern yellow-billed hornbill (Tockus flavirostris), Samburu National Reserve, Kenya, East Africa, Africa

Southern yellow-billed hornbill (Tockus leucomelas) with a winged predatory katydid (Clonia wahlbergi), Kruger National Park, South Africa, Africa

Southern yellow-billed hornbill (Tockus leucomelas) with a winged predatory katydid (Clonia wahlbergi), Kruger National Park, South Africa, Africa

Southern Ground-Hornbill (Ground Hornbill) (Bucorvus leadbeateri), Kruger National Park, South Africa, Africa

Ruaha hornbill (Ruaha red-billed hornbill) (Tanzanian red-billed hornbill) (Tockus ruahae), Ruaha National Park, Tanzania, East Africa, Africa

Southern ground-hornbill (Southern ground hornbill) (Bucorvus leadbeateri), male, Kruger National Park, South Africa, Africa

Southern Yellow-billed Hornbill (Tockus leucomelas), Kruger National Park, South Africa, Africa

Southern Red-billed Hornbill (Tockus rufirostris), Kruger National Park, South Africa, Africa

Southern Yellow-billed Hornbill (Tockus leucomelas), Kruger National Park, South Africa, Africa

Southern Yellow-billed Hornbill (Tockus leucomelas), Kruger National Park, South Africa, Africa

Southern Yellow-Billed Hornbill (Tockus leucomelas), Kruger National Park, South Africa, Africa

Naga tribesmen participating at the Stone pulling ceremony during Kisima Nagaland Hornbill festival, Kohima, Nagaland, India, Asia

Von Der Decken's hornbill (Tockus deckeni), male, Selous Game Reserve, Tanzania, East Africa, Africa

Stone pulling ceremony during Kisima Nagaland Hornbill festival, Kohima, Nagaland, India, Asia

Southern ground-hornbill (Southern ground hornbill) (Bucorvus leadbeateri), male, Kruger National Park, South Africa, Africa

Southern Ground-Hornbill (Ground Hornbill) (Bucorvus leadbeateri) with a snake, Kruger National Park, South Africa, Africa

Ground hornbill (Bucorvus leadbeateri) in flight, Chobe National Park, Botswana, Africa

Von Der Decken's hornbill (Tockus deckeni), male, Selous Game Reserve, Tanzania, East Africa, Africa

Southern yellow-billed hornbill (Tockus leucomelas), Kruger National Park, South Africa, Africa

Southern Ground-Hornbill or Ground Hornbill (Bucorvus leadbeateri) adult, Serengeti National Park, Tanzania

Stone pulling ceremony during Kisima Nagaland Hornbill festival, Kohima, Nagaland, India, Asia

African grey hornbill (African gray hornbill) (Tockus nasutus), Serengeti National Park, Tanzania, East Africa, Africa

Southern ground-hornbill (ground hornbill) (Bucorvus leadbeateri), Selous Game Reserve, Tanzania, East Africa, Africa

Southern Yellow-Billed Hornbill (Tockus leucomelas), Kruger National Park, South Africa, Africa

Southern yellow -billed hornbill (Tockus flavirostris), Chief Island, Moremi Game Reserve, Okavango Delta, Botswana, Africa

Southern yellow-billed hornbill (Tockus leucomelas) flipping a seed, Kgalagadi Transfrontier Park, encompassing the former Kalahari National Park, South Africa, Africa

Southern red-billed hornbill (Tockus rufirostris), Kruger National Park, South Africa, Africa

Naga tribesmen participating at the Stone pulling ceremony during Kisima Nagaland Hornbill festival, Kohima, Nagaland, India, Asia

Female trumpeter hornbill (Bycanistes bucinator) calling, Hluhluwe Game Reserve, South Africa, Africa

Naga tribesmen participating at the Stone pulling ceremony during Kisima Nagaland Hornbill festival, Kohima, Nagaland, India, Asia

Papuan Hornbill, Rhyticeros plicatus, Tufi, Oro Province, Papua New Guinea

Southern yellow hornbill (Tockus leucomelas), Madikwe Game Reserve, Madikwe, South Africa, Africa

Southern yellow-billed hornbill (Tockus leucomelas), Kruger National Park, South Africa, Africa

Southern yellow-billed hornbill (Tockus leucomelas), Kgalagadi Transfrontier Park, South Africa, Africa

Papuan Hornbill, Rhyticeros plicatus, Tufi, Oro Province, Papua New Guinea

Immature Southern yellow-billed hornbill (Tockus leucomelas), Kruger National Park, South Africa, Africa

Papuan Hornbill, Rhyticeros plicatus, Tufi, Oro Province, Papua New Guinea

Ruaha hornbill (Ruaha red-billed hornbill) (Tanzanian red-billed hornbill) (Tockus ruahae), Ruaha National Park, Tanzania, East Africa, Africa

Papuan Hornbill, Rhyticeros plicatus, Tufi, Oro Province, Papua New Guinea

Papuan Hornbill, Rhyticeros plicatus, Tufi, Oro Province, Papua New Guinea

Papuan Hornbill, Rhyticeros plicatus, Tufi, Oro Province, Papua New Guinea

Southern ground-hornbill (ground hornbill) (Bucorvus leadbeateri), Kruger National Park, South Africa, Africa

Immature Southern yellow-billed hornbill (Tockus leucomelas), Kruger National Park, South Africa, Africa

Papuan Hornbill, Rhyticeros plicatus, Tufi, Oro Province, Papua New Guinea

Southern ground hornbill (Bucorvus leadbeateri), Kruger National Park, South Africa, Africa

Southern Ground-Hornbill (Bucorvus leadbeateri), Masai Mara National Reserve, Kenya, East Africa, Africa

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

European roller (Coracias garrulus) on top, Von der Decken's hornbill in centre, above Ashy starling (Lamprotornis unicolor), Taita Hills, Kenya, East Africa, Africa

Iban tribesman wearing traditional tribal headdress of hornbill feathers, monkey hair and traditional beadwork, Mulu, Sarawak, Malaysian Borneo, Malaysia, Southeast Asia, Asia

Southern yellow billed hornbill, Pilanesberg National Park, North West Province, South Africa, Africa

Southern red-billed hornbill (Tockus rufirostris), Kruger National Park, South Africa, Africa

Southern yellowbilled hornbill (Tockus leucomelas), Kgalagadi Transfrontier Park, South Africa, Africa

Southern yellow-billed hornbill (Tockus leucomelas) flipping a grasshopper, Kgalagadi Transfrontier Park, encompassing the former Kalahari Gemsbok National Park, South Africa, Africa

Southern yellow-billed hornbill (Tockus leucomelas), Kruger National Park, South Africa, Africa

Southern Red-billed Hornbill (Tockus rufirostris), Macatoo, Okavango Delta, Botswana, Africa

Southern yellow-billed hornbill (Tockus leucomela) in flight, Zimanga game reserve, South Africa, Africa

Southern ground-hornbill (ground hornbill) (Bucorvus leadbeateri), male, Kruger National Park, South Africa, Africa

Southern red-billed hornbill (Tockus rufirostris), Kruger National Park, South Africa, Africa

Yellowbilled hornbill (Tockus leucomelas), Kruger National Park, South Africa, Africa

An adult southern yellow-billed hornbill (Tockus leucomelas), in the Okavango Delta, Botswana, Africa

Southern red-billed hornbill (Tockus rufirostris), Kruger National Park, South Africa, Africa

African grey hornbill (African gray hornbill) (Tockus nasutus), female, Serengeti National Park, Tanzania, East Africa, Africa

Close-up portrait of an eastern yellow-billed hornbill (Tockus flavirostris), Khwai Concession, Okavango Delta, Botswana, Africa

Hornbill (Tockus monteiri) on an acacia tree, Etosha National Park, Namibia, Africa

Yellow billed hornbill, Botswana, Africa

Southern Red-billed Hornbill (Tockus rufirostris), Makgadikgadi Pans National Park, Kalahari, Botswana, Africa

Northern red-billed hornbill (Tockus erythrorhynchus), Tsavo East, Kenya, East Africa, Africa

An adult Tanzanian red-billed hornbill (Tockus ruahae), Tarangire National Park, Tanzania, East Africa, Africa

Southern yellow-billed hornbill (Tockus leucomelas), Kruger National Park, South Africa, Africa

Southern ground-hornbill (ground hornbill) (Bucorvus leadbeateri), Kruger National Park, South Africa, Africa

An adult Southern red-billed hornbill (Tockus rufirostris) near Lake Kariba, Zimbabwe, Africa

Hornbill (Bucerotidae) on tree, Kruger National Park, South-Africa, Africa

Von der Decken's Hornbill (Tockus deckeni), Tsavo, Kenya, East Africa, Africa

An Oriental Pied Hornbill in the Langkawi rainforest, Malaysia, Southeast Asia, Asia

An adult Tanzanian red-billed hornbill (Tockus ruahae), Tarangire National Park, Tanzania, East Africa, Africa

An Oriental Pied Hornbill in the Langkawi rainforest, Malaysia, Southeast Asia, Asia

Southern yellow-billed hornbill (Tockus leucomelas), Kruger National Park, South Africa, Africa

A red-billed hornbill (Tockus erythrorhynchus) on a tree, Tsavo, Kenya, East Africa, Africa

Red-billed hornbill (Tockus erythrorhynchus), Tsavo, Kenya, East Africa, Africa

Southern Ground-Hornbill (Bucorvus leadbeateri), Savuti, Chobe National Park, Botswana.

Southern Ground-Hornbill (Ground Hornbill) (Bucorvus leadbeateri) with prey, Kruger National Park, South Africa, Africa

Southern yellowbilled hornbill (Tockus leucomelas), Kruger National Park, South Africa

Southern Ground Hornbill (Bucorvus leadbeateri), Lake Manyara National Park, Tanzania, East Africa, Africa

Ground hornbill (Bucorvus leadbeateri), Kruger National Park, South Africa, Africa

Yellowbilled hornbill (Tockus leucomelas), Kruger National Park, South Africa, Africa

An adult Malabar pied hornbill (Anthracoceros coronatus), feeding on berries, Udawalawe National Park, Sri Lanka, Asia

Hornbill (Bucerotidae) on tree, Kruger National Park, South-Africa, Africa

A southern ground hornbill (Bucorvus leadbeateri), Tsavo, Kenya, East Africa, Africa

Red-billed hornbill (Tockus erythrorhynchus), Samburu National Reserve, Kenya, East Africa, Africa

Yellow-billed Hornbill (Tockus flavirostris), Savuti, Chobe National Park, Botswana.

Naga man holding spear and wearing headdress of woven cane decorated with wild boar teeth, bear fur, red dyed goats hair and hornbill feathers, Naga New Year Festival, Lahe village, Sagaing Division, Myanmar (Burma), Asia

Tribal ritual dances at the Hornbill Festival, Kohima, Nagaland, India, Asia

Naga tribal men in traditional clothing, Kisima Nagaland Hornbill festival, Kohima, Nagaland, India, Asia

Naga tribal man in traditional outfit, Kisima Nagaland Hornbill festival, Kohima, Nagaland, India, Asia

Southern pied-hornbill (Anthracoceros convexus), Bali Bird Park, Indonesia, Southeast Asia, Asia

Naga tribal men in traditional clothing, Kisima Nagaland Hornbill festival, Kohima, Nagaland, India, Asia

Naga tribal man in traditional outfit, Kisima Nagaland Hornbill festival, Kohima, Nagaland, India, Asia

Tribal ritual dances at the Hornbill Festival, Kohima, Nagaland, India, Asia

Naga tribal man in traditional outfit, Kisima Nagaland Hornbill festival, Kohima, Nagaland, India, Asia

Tribes woman at the Hornbill Festival, Kohima, Nagaland, India, Asia