Editing Bird-of-paradise (section)

===Breeding===
[[File:Victoria's Riflebird courtship - Lake Eacham - Queensland S4E8070 (22198704599).jpg|thumb|A male Victoria's riflebird displays and is inspected by a female.]]
Most species have elaborate mating rituals, with at least eight species exhibiting [[lek mating]] systems,<ref>{{Cite journal|last1=Beehler|first1=Bruce|last2=Pruett-Jones|first2=Stephen G.|date=1983|title=Display dispersion and diet of birds of paradise: a comparison of nine species|url=http://dx.doi.org/10.1007/bf00299927|journal=Behavioral Ecology and Sociobiology|volume=13|issue=3|pages=229–238|doi=10.1007/bf00299927|s2cid=21374280|issn=0340-5443}}</ref> including the genus ''Paradisaea''. Others, such as the ''[[Cicinnurus]]'' and ''[[Parotia]]'' species, have highly ritualised mating dances. Across the family (Paradisaeidae), female preference is incredibly important in shaping the courtship behaviors of males and, in fact, drives the evolution of ornamental combinations of sound, color, and behavior.<ref name="BOP2018">
{{cite journal
|last=Ligon
|first=Russell A.
|author2=Diaz, Christopher D.
|author3=Morano, Janelle L.
|author4=Troscianko, Jolyon
|author5=Stevens, Martin
|author6=Moskeland, Annalyse
|author7=Laman, Timothy G.
|author8=Scholes III, Edwin
|year=2019
|title=Evolution of correlated complexity in the radically different courtship signals of birds-of-paradise
|journal=PLOS Biology
|volume=16
|issue=11
|page=e2006962
|doi=10.1371/journal.pbio.2006962
|pmid=30457985
|pmc=6245505
|doi-access=free
}}
[https://journals.plos.org/plosbiology/article?id=10.1371/journal.pbio.2006962 Open access]
</ref> Males are [[Animal sexual behaviour#Polygamy|polygamous]] in the [[sexually dimorphic]] species, but [[Monogamy in animals|monogamous]] in at least some of the monomorphic species. [[Hybrid (biology)|Hybridisation]] is frequent in these birds, suggesting the polygamous species of bird of paradise are very closely related despite being in different genera. Many hybrids have been described as new species in the past,<ref>{{Cite journal|last=Koch|first=André|date=2018-05-31|title=Discovery of a rare hybrid specimen known as Maria's bird of paradise at the Staatliches Naturhistorisches Museum in Braunschweig|url=https://zse.pensoft.net/article/25139/|journal=Zoosystematics and Evolution|language=en|volume=94|issue=2|pages=315–324|doi=10.3897/zse.94.25139|issn=1860-0743|doi-access=free}}</ref> and doubt remains regarding whether some forms, such as [[Rothschild's lobe-billed bird-of-paradise]], are valid.<ref>{{Cite journal|last1=Smith|first1=Kimberly G.|last2=Fuller|first2=Errol|date=1997|title=The Lost Birds of Paradise|journal=The Condor|volume=99|issue=4|pages=1016|doi=10.2307/1370166|jstor=1370166|issn=0010-5422|doi-access=free}}</ref>

Birds-of-paradise build their nests from soft materials, such as leaves, ferns, and vine tendrils, typically placed in a tree fork.<ref name=EoB/> The typical number of eggs in each [[Clutch (eggs)|clutch]] varies among the species and is not known for every species. For larger species, it is almost always just one egg, but smaller species may produce clutches of 2–3 eggs.<ref>
{{cite journal
|last=Mackay
|first=Margaret D.
|year=1990
|title=The Egg of Wahnes' Parotia ''Parotia wahnesi'' (Paradisaeidae)
|journal=Emu
|volume=90
|issue=4
|page=269
|doi=10.1071/mu9900269a
}}
[http://www.publish.csiro.au/?act=view_file&file_id=MU9900269.pdf PDF fulltext]
</ref> Eggs hatch after 16–22 days, and the young leave the nest at between 16 and 30 days of age.<ref name=EoB>
{{cite book
|editor=Forshaw, Joseph
|author= Frith, Clifford B.
|year=1991
|title=Encyclopaedia of Animals: Birds
|publisher= Merehurst Press
|location=London
|pages= 228–231
|isbn= 1-85391-186-0
}}
</ref>