Peacock-pheasant: Difference between revisions
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{{short description|Genus of birds}} |
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{{Use mdy dates|date=January 2013}} |
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{{Automatic Taxobox |
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| name = Peacock-pheasants |
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| image = Stavenn Polyplectron napoleonis 01.jpg |
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| image_caption = male [[Palawan peacock-pheasant]]<br/>''Polyplectron napoleonis'' |
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| taxon = Polyplectron |
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| authority = [[Coenraad Jacob Temminck|Temminck]], 1807 |
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| synonyms = |
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''Polyplectrum'' (''lapsus'') |
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}} |
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The '''peacock-pheasants''' are a bird genus, '''''Polyplectron''''', of the family [[Phasianidae]], consisting of eight [[species]]. They are colored inconspicuously, relying on heavily on [[crypsis]] to avoid detection. When threatened, peacock-pheasants will alter their shapes using specialised plumage that when expanded reveals numerous iridescent orbs. The birds also vibrate their plume quills further accentuating their [[aposematism]]. Peacock-pheasants exhibit well developed metatarsal spurs. Older individuals may have multiple spurs on each leg. These kicking thorns are used in self-defense. |
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The systematics of the genus are somewhat unclear. Molecular research has revealed that peacock-pheasants are not genetically related to [[pheasant]]s and only distantly to [[peafowl]]. Their closest allies are the Asiatic [[Galloperdix|spurfowl]] and the [[crimson-headed partridge]], endemic to [[Borneo]]. These three genera share the curious tendency for multiple metatarsal spurs. Though they are somewhat divergent morphologically, their skeletons are nearly identical. |
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The species of ''Polyplectron'' diverged at some time between, roughly, the [[Early Pliocene]] and the [[Middle Pleistocene]], or 5–1 [[mya (unit)|million years ago]]. ''Polyplectron malacense'' and ''P. schleiermacheri'' form a [[Basal (phylogenetics)|basal]] radiation around the southern [[South China Sea]] together with ''P. napoleonis'', as is confirmed by comparison of [[biogeography]] and [[mtDNA]] [[cytochrome b|cytochrome ''b'']] and [[D-loop]] as well as the [[nuclear DNA|nuclear]] [[ovomucoid]] [[intron]] G.<ref name=Kimball>Kimball, Rebecca T.; Braun, Edward L.; Ligon, J. David; Lucchini, Vittorio & Randi, Ettore (2001): A molecular phylogeny of the peacock-pheasants (Galliformes: ''Polyplectron'' spp.) indicates loss and reduction of ornamental traits and display behaviours. ''[[Biological Journal of the Linnean Society|Biol. J. Linn. Soc.]]'' '''73'''(2): 187–198. [http://www.ingentaconnect.com/content/els/00244066/2001/00000073/00000002/art90536 HTML abstract]</ref> |
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The relationships of the other forms are more poorly understood. ''P. germaini'' and ''P. bicalcaratum'' are similar in [[morphology (biology)|morphology]] and are nearly [[parapatric]]; the molecular data suggests that the latter is a [[symplesiomorphy]]. It would appear that ''P. germaini'' and ''P. katsumatae'' represent an early offshoot of the aforementioned basal radiation. The two montane-adapted species ''P. chalcurum'' and ''P. inopinatum'' are not derived from a single isolation event, and appear to have acquired more subdued coloration independently. A trend in this genus to ''lose''—not gain—pronounced [[sexual dimorphism]] is better supported by biogeographical and molecular data than the alternate scenario.<ref name=Kimball/> |
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In 2010 the [[IOC World Bird List]] listed the [[Hainan peacock-pheasant]] as a species.<ref name="worldbirdnames.org">[http://www.worldbirdnames.org/updates-PS.html ] {{webarchive |url=https://web.archive.org/web/20090729080733/http://www.worldbirdnames.org/updates-PS.html |date=July 29, 2009 }}</ref> Following [[Jean Théodore Delacour]], this species has historically been listed as a [[subspecies]] of ''P. bicalcaratum''. Prior to reclassification by Delacour, the Hainan peacock-pheasant has been considered a distinct species by several ornithologists. Indeed, when it was first described to science by Katsumata it was considered a distinct species. Prominent organizations including the World Bird List have recently concurred, and species status is currently under review by the [[Oriental Bird Club]].<ref>{{cite web |url=http://orientalbirdimages.org/new-obc-checklist-commentary.html |title=OBC Checklist |publisher=Orientalbirdimages.org |accessdate=January 16, 2013 |url-status=dead |archiveurl=https://web.archive.org/web/20121015234357/http://orientalbirdimages.org/new-obc-checklist-commentary.html |archivedate=October 15, 2012 |df=mdy-all }}</ref> It is considered of utmost importance to have the Hainan peacock-pheasant recognized as a full species due to its [[endangered]] status. The Hainan peacock-pheasant is endemic to the island of [[Hainan]], where its [[population density]] is very low in its [[tropical forest]] habitat on the island and the wild population is declining, making it now severely endangered and among the rarest species in the order [[Galliformes]] in [[China]]. |
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==Species== |
==Species== |
Revision as of 19:09, 19 November 2019
Hello, I’m a pekock show! I eat pheasants and kill innocent chicks ha ha ha
Species
Image | Name | Common name | Distribution |
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Polyplectron napoleonis – formerly P. emphanum | Palawan peacock-pheasant | Philippines | |
Polyplectron malacense | Malayan peacock-pheasant | Malay Peninsula from the Isthmus of Kra region southwards | |
Polyplectron schleiermacheri | Bornean peacock-pheasant | Borneo | |
Polyplectron germaini | Germain's peacock-pheasant | mid-southern Vietnam and far eastern Cambodia | |
Polyplectron bicalcaratum | Grey peacock-pheasant | Bangladesh, Northeast India and Southeast Asia | |
Polyplectron katsumatae – split from P. bicalcaratum[1] | Hainan peacock-pheasant | Hainan, China. | |
Polyplectron chalcurum | Bronze-tailed peacock-pheasant | Indonesia | |
Polyplectron inopinatum | Mountain peacock-pheasant | Malaysia. |
References
Wikispecies has information related to Peacock-pheasant.
Wikimedia Commons has media related to Polyplectron.