Martin Willis / Victoria's Riflebird (Ptiloris victoriae) male in courtship display, Atherton Tableland, Queensland, Australia. Sequence 2 of 3

Shane P. White / Brown Sicklebill (Epimachus meyeri), Kumul Lodge, Papua New Guinea

Piotr Naskrecki / African Paradise-Flycatcher (Terpsiphone viridis) flying, Gorongosa National Park, Mozambique

Chien Lee / Minden / Magnificent Bird-of-paradise (Cicinnurus magnificus) male at lek, Arfak Mountains, West Papua, Indonesia

Staffan Widstrand / Wilson's bird-of-paradise (Cicinnurus respublica), Waigeo, Raja Ampat, Western Papua, Indonesian New Guinea

Alan Murphy / Scissor-tailed Flycatcher (Tyrannus forficatus) male flying, Texas

Dong Lei / Asian paradise-flycatcher (Terpsiphone paradisi) pair perched on branch, Shanyang town, Gutian County, Hubei province, China.

Tim Laman / Huli 'singsing' dance ceremony. Huli wigmen wearing human hair wigs and feathers of various birds of paradise and other bird species. Tari Valley, Southern Highlands Province, Papua New Guinea. Novem...

Tim Laman / King of Saxony Bird of Paradise (Pteridophora alberti) adult male on calling perch above the rainforest canopy. Tari Pass area, Southern Highlands Province, Papua New Guinea.

Tim Laman / King of Saxony Bird of Paradise (Pteridophora alberti) adult male on calling perch, Southern Highlands province, Papua New Guinea

Tim Laman / Black Sicklebill Bird of Paradise (Epimachus fastuosus) male feeding on fruits of Shefflera tree. New Guinea

Matthias Breiter / Gentoo Penguin (Pygoscelis papua) surfacing, Gonzalez Videla Antarctic Base, Paradise Bay, Antarctic Peninsula, Antarctica

Cyril Ruoso / Raggiana Bird-of-paradise (Paradisaea raggiana) portrait, native to Papua New Guinea

David Tipling / Tribal performers from Hagen at Sing-sing, Mount Hagen Show in Western Highlands Papua New Guinea. Headress contains Papuan Lorikeet birds and King of Saxony plumes. August 2011

David Tipling / Tribal performer from the Anglimp District in Waghi Province Western Highlands Papua New Guinea performing at a Sing-sing, Hagen Show Western Highlands Papua New Guinea.With bird of paradise plumes in...

Christophe Courteau / African Paradise Flycatcher (Terpsiphone viridis) male sitting on nest on small branches in the shade. Okavango Delta, Botswana

Martin Willis / Victoria's Riflebird (Ptiloris victoriae) male displaying for female on vine lek, Malanda, Queensland, Australia

Chien Lee / Standardwing (Semioptera wallacii) male displaying at lek, Halmahera Island, North Maluku, Indonesia

Konrad Wothe / Magnificent riflebird (Ptiloris magnificus) male perched in rainforest, Iron Range National Park, Cape York Peninsula, North Queensland, Australia, November

Konrad Wothe / Victoria's riflebird (Ptiloris victoriae) male displaying in rainforest, Atherton Tablelands, Queensland, Australia, October

Tim Laman / Berlepschi's Parotia Bird of Paradise (Parotia berlepschi) male on the perch at his display court. Foja Mountains, Papua, Indonesia, 2008. (taken during Conservation International Rapid Assessment Pro...

Jeff Wilson / Jeff Wilson searching for Birds of Paradise, tropical rainforest, Papua New Guinea. For BBC Planet Earth, Jungles episode, 2005

Tim Laman / Magnificent Bird of Paradise (Cicinnurus magnificus) male calling on calling perch near his display court, Huon Peninsula, YUS Conservation Area, Morobe Province, Papua New Guinea. Near-threatened

Tim Laman / Wilson's Bird of Paradise (Cicinnurus respublica) male and two females in display court, Batanta Island, Papua, Indonesia. Near-threatened.

Tim Laman / Female and young male Ribbon-tailed Astrapia (Astrapia mayeri) bird of paradise on Schefflera fruits, Southwestern slopes of Mt. Hage, Enga Province, Papua New Guinea.

Tim Laman / Red Bird of Paradise (Paradisaea rubra) adult male at lek display site in the top of a canopy tree. Batanta Island, Papua, Indonesia. Near-threatened.

Tim Laman / Adult male Twelve-wired Bird of Paradise (Seleucidis melanoleuca) on display pole in swamp forest along the Karawari River, East Sepik Province, Papua New Guinea.

Tim Laman / Blue Bird of Paradise (Paradisaea rudolphi) male calling in the vicinity of the Tari Valley, Southern Highlands Province, Papua New Guinea.

Tim Laman / Adult male Twelve-wired Bird of Paradise (Seleucidis melanoleuca) on his display pole in the swamp forest along the Karawari River, East Sepik Province, Papua New Guinea.

Tim Laman / Goldie's Bird of Paradise (Paradisaea decora) male perched, Fergusson Island, Milne Bay Province, Papua New Guinea. Near-theatened

Tim Laman / Magnificent Bird of Paradise (Cicinnurus magnificus) male perched, Arfak Mountains, Papua, Indonesia.

Tim Laman / Wallace's Standardwing Bird of Paradise (Semioptera wallacei) male calling at display site in rainforest canopy, Kali Batu Putih, Halmahera Island, North Moluccas, Indonesia.

Tim Laman / King of Saxony (Pteridophora alberti) bird of paradise, male on display perch performing a practice display, Southwestern slopes of Mt. Hage, Enga Province, Papua New Guinea.

Tim Laman / Magnificent Bird of Paradise (Cicinnurus magnificus) male perched with fruit on calling perch near his display court, Huon Peninsula, YUS Conservation Area, Morobe Province, Papua New Guinea. Near-thr...

Tim Laman / Male Wahnes Parotia (Parotia wahnesi) bird of paradise in the YUS Conservation Area, Huon Peninsula, Morobe Province, Papua New Guinea, Endangered

Tim Laman / Magnificent Bird of Paradise (Cicinnurus magnificus) male erecting his cape in display on calling perch near his display court, Huon Peninsula, YUS Conservation Area, Morobe Province, Papua New Guinea...

Tim Laman / Wallace's Standardwing Bird of Paradise (Semioptera wallacei) male at display site in rainforest canopy, Halmahera, North Moluccas, Indonesia.

Tim Laman / Male Carola's Parotia (Parotia carolae) bird of paradise displaying on his display court to five females perched above, Crater Mountain Wildlife Management Area, Eastern Highlands Province, Papua New...

Tim Laman / Magnificent Bird of Paradise (Cicinnurus magnificus) male displaying to female at lek, Arfak Mountains, Papua, Indonesia.

Tim Laman / Superb Bird of Paradise (Lophorina superba) male in rainforest canopy in the vicinity of the Tari Valley, Southern Highlands Province, Papua New Guinea.

Tim Laman / Male Carola's Parotia (Parotia carolae) bird of paradise displaying on his display court to five females perched above, Crater Mountain Wildlife Management Area, Eastern Highlands Province, Papua New...

Tim Laman / Male King Bird of Paradise (Cicinnurus regius) on his display vine in the rainforest canopy, in the vicinity of the Karawari River, East Sepik Province, Papua New Guinea.

Tim Laman / Female Brown Sicklebill (Epimachus meyeri) bird of paradise in the vicinity of Mt. Hagen, Enga Province, Papua New Guinea.

Tim Laman / King of Saxony Bird of Paradise (Pteridophora alberti) male displaying on display perch, Enga Province, Papua New Guinea.

Tim Laman / Goldie's Bird of Paradise (Paradisaea decora) male displaying to female at lek, Fergusson Island, Milne Bay Province, Papua New Guinea. Near-threatened.

Tim Laman / Magnificent Bird of Paradise (Cicinnurus magnificus) male perched, Arfak Mountains, Papua, Indonesia.

Tim Laman / Wallace's Standardwing Bird of Paradise (Semioptera wallacei) male at display site in the rainforest canopy, Kali Batu Putih, Halmahera Island, North Moluccas, Indonesia.

Tim Laman / Wilson's Bird of Paradise (Cicinnurus respublica) male, Batanta Island, Papua, Indonesia, Near-threatened.

Tim Laman / Magnificent Bird of Paradise (Cicinnurus magnificus) male displaying to female at lek display site, Arfak Mountains, Papua, Indonesia.

Tim Laman / Male Victoria's Riflebird (Ptiloris victoriae) bird of paradise perched, calling on display perch. Atherton Tablelands, Wooroonooran National Park, Queensland, Australia.

Tim Laman / Male Carola's Parotia (Parotia carolae) bird of paradise displaying at his display court, Crater Mountain Wildlife Management Area, Eastern Highlands Province, Papua New Guinea.

Tim Laman / Adult male Ribbon-tailed Astrapia (Astrapia mayeri) feeding on fruits of a Schefflera plant. Southwestern slopes of Mt. Hage, Enga Province, Papua New Guinea.

Tim Laman / Goldie's Bird of Paradise (Paradisaea decora) displaying to female, Fergusson Island, Milne Bay Province, Papua New Guinea.

Tim Laman / Red Bird of Paradise (Paradisaea rubra) adult male at lek display site in the top of a canopy tree. Batanta Island, Papua, Indonesia.

Jouan & Rius / Male Madagascar paradise flycatcher (Terpsiphone mutata) singing and displaying, dry forest of Berenty reserve, Madagascar South

Tui De Roy / Chinstrap Penguin (Pygoscelis antarctica) parents with chick, Paradise Bay, Antarctica Peninsula, Antarctica

Phil Savoie / Raggiana bird of paradise (Paradisaea raggiana) male displaying to female, Papua New Guinea, Varirata NP.

Phil Savoie / Raggiana bird of paradise (Paradisaea raggiana) male displaying at lek Papua New Guinea, Varirata NP.

RICHARD KIRBY / Wilson's Bird of Paradise male displays to females on twig above. Irian Jaya, Western New Guinea (West Papua).

RICHARD KIRBY / Wilson's Bird of Paradise male displaying to females on twig above. Irian Jaya, Western New Guinea (West Papua).

Dave Watts / Superb lyrebird displaying {Menura novaehollandiae} SE Australia

Peter Blackwell / Paradise whydah, Masai Mara, Kenya

Martin Willis / Victoria's Riflebird (Ptiloris victoriae) male in courtship display, Atherton Tableland, Queensland, Australia. Sequence 3 of 3

Martin Willis / Victoria's Riflebird (Ptiloris victoriae) male in courtship display, Atherton Tableland, Queensland, Australia. Sequence 1 of 3

Laurie Hedges / Slow motion clip of a Red bird of paradise (Paradisaea rubra) preening its feathers, turns round and takes off from a tree branch, Raja-Ampat, Papua, Indonesia.

Richard Du Toit / Blue crane (Anthropoides paradiseus) pair, Itala Game Reserve, KwaZulu-Natal, South Africa.

Richard Du Toit / Blue crane (Anthropoides paradiseus) pair, Itala Game Reserve, KwaZulu-Natal, South Africa.

Richard Du Toit / Blue crane (Anthropoides paradiseus) Western Cape Province, South Africa.

Richard Du Toit / Blue crane (Anthropoides paradiseus) courtship display, Overberg, Western Cape Province, South Africa.

Nick Upton / Male Blackbird (Turdus merula) feeding on Crab apple (Malus sylvestris), Wiltshire garden, UK, November.

Shane P. White / Brown Sicklebill (Epimachus meyeri) feeding on fruit, Kumul Lodge, Papua New Guinea

Piotr Naskrecki / African Paradise-Flycatcher (Terpsiphone viridis) flying, Gorongosa National Park, Mozambique

Piotr Naskrecki / African Paradise-Flycatcher (Terpsiphone viridis) flying, Gorongosa National Park, Mozambique

Juergen Freund / Male Victoria's riflebird (Ptiloris victoriae) calling in the forest, Atherton Tablelands, Queensland, Australia.

Juergen Freund / Male Victoria's riflebird (Ptiloris victoriae) calling in the forest, Atherton Tablelands, Queensland, Australia.

Chien Lee / Magnificent Bird-of-paradise (Cicinnurus magnificus) male displaying at lek, Arfak Mountains, West Papua, Indonesia

Chien Lee / Magnificent Bird-of-paradise (Cicinnurus magnificus) male calling at lek, Arfak Mountains, West Papua, Indonesia

Staffan Widstrand / Wilson's bird-of-paradise (Cicinnurus respublica), Waigeo, Raja Ampat, Western Papua, Indonesian New Guinea

Staffan Widstrand / Wilson's bird-of-paradise (Cicinnurus respublica), Waigeo, Raja Ampat, Western Papua, Indonesian New Guinea

Staffan Widstrand / Wilson's bird-of-paradise (Cicinnurus respublica), Waigeo, Raja Ampat, Western Papua, Indonesian New Guinea

Staffan Widstrand / Wilson's bird-of-paradise (Cicinnurus respublica), Waigeo, Raja Ampat, Western Papua, Indonesian New Guinea

Staffan Widstrand / Wilson's bird-of-paradise (Cicinnurus respublica), Waigeo, Raja Ampat, Western Papua, Indonesian New Guinea

Andy Trowbridge / Paradise Shelduck (Tadorna variegata) female in water, calling. Canterbury, New Zealand, July. Endemic Species.

Andy Trowbridge / Female Paradise shelduck (Tadorna variegata) portrait. Ashley River, Canterbury, New Zealand. July.

Tony Heald / Blue Crane (Anthropoides paradiseus) with two chicks, Etosha National Park, Namibia, March.

Phil Savoie / Blue tit (Cyanistes caeruleus) carrying insect prey to nest, Monmouthshire, Wales, UK. May.

Phil Savoie / Blue tit (Cyanistes caeruleus) carrying insect prey to nest, Monmouthshire, Wales, UK. May.

Phil Savoie / Blue tit (Cyanistes caeruleus) carrying insect prey to nest, Monmouthshire, Wales, UK. May.

Sandesh Kadur / Male Asian paradise flycatcher (Terpsiphone paradisi) perched on a branch, Ranthambore National Park, Rajasthan, India. 2016.

Sandesh Kadur / Tilt shot up to a male Asian paradise flycatcher (Terpsiphone paradisi) perched on a branch, Ranthambore National Park, Rajasthan, India. 2016.

Konrad Wothe / Female Victoria's riflebird (Ptiloris victoriae) preening, Atherton Tablelands, Queensland, Australia.

Konrad Wothe / Female Victoria's riflebird (Ptiloris victoriae) preening, Atherton Tablelands, Queensland, Australia.

Konrad Wothe / Male Magnificent riflebird (Ptiloris magnificus) vocalising, Iron Range National Park, Cape York Peninsula, North Queensland, Australia.

Konrad Wothe / Male Magnificent riflebird (Ptiloris magnificus) vocalising, Iron Range National Park, Cape York Peninsula, North Queensland, Australia.

Konrad Wothe / Male Victoria's riflebird (Ptiloris victoriae) vocalising and displaying, Atherton Tablelands, Queensland, Australia.

Konrad Wothe / Male Victoria's riflebird (Ptiloris victoriae) preening and thermoregulating, Atherton Tablelands, Queensland, Australia.