- Grey Peacock-pheasant
name = Grey Peacock-pheasant
status = LC | status_system = IUCN3.1
genus = "
species = "P. bicalcaratum"
binomial = "Polyplectron bicalcaratum"
binomial_authority = Linnaeus, 1758
* "P. b. bicalcaratum" Taxobox_authority | author = Linnaeus | date = 1758 Common Grey Peacock-pheasant
* "P. b. katsumatae" Taxobox_authority | author = Rothschild | date = 1906 Hainan Grey Peacock-pheasant
* "P. b. ghigii" Taxobox_authority | author = Delacour & Jabouille | date = 1924 Ghigi's Grey Peacock-pheasant
* "P. b. bailyi" Taxobox_authority | author = Lowe | date = 1925 Lowe's Grey Peacock-pheasant
* "P. b. bakeri" Taxobox_authority | author = Lowe | date = 1925 Northern Grey Peacock-pheasant
synonyms ="Pavo bicalcaratus" Linnaeus, 1758 "Polyplectron chinquis"
The Grey Peacock-pheasant, "Polyplectron bicalcaratum" also known as Burmese Peacock or Chinquis Peacock-pheasant is a large, up to 76cm long, greyish brown
pheasantwith finely spotted green ocelli, elongated bushy crest, bare pink or yellow facial skin, white throat, and grey iris, bill and legs. Both sexes are similar. The female is smaller and darker than male. The young resembles the female.
The Grey Peacock-pheasant is distributed to lowland and hill forests of mainland
southeast Asia, but excluding most of Indochina. The female usually lays two eggs. The diet consists mainly of seeds, termites, fruits and invertebrates.
phylogenyof this species is fairly enigmatic. mtDNAcytochrome "b" and D-loopas well as the nuclear ovomucoid intronG data confirms that it belongs to a cladetogether with Germain's Peacock-pheasant, but also the "brown" southernly species Bronze-tailed Peacock-pheasantand Mountain Peacock-pheasant(Kimball "et al." 2001).
The molecular data suggests that its closest relative - though not with high confidence - is the Bronze-tailed Peacock-pheasant. This is unlikely to be strictly correct for two reasons. First,
biogeographyis equivocal towards the timing of divergence of the "brown" species, tentatively suggesting the Mountain Peacock-pheasant may be a more recent divergence from mainland stock.
Second, the molecular data itself is spurious in this species, the most morphologically diverse and widespread "Polyplectron": There is no data on the origin and number of specimens, but it is fairly likely that only a single bird, possibly of captive origin and undeterminable subspecific allocation, was sampled. All that can be reasonably assumed is that the Grey Peacock-pheasant evolved on mainland Southeast Asia, probably during the
Late Plioceneto Early Pleistocene(3.6-1 mya [Note that the molecular clockcalibration method used by Kimball "et al." (2001) is now known to be inappropriate, yielding far too low estimates in galliform birds.] ).
Lowe's Grey Peacock-pheasant, "P. b. bailyi", was described from a captive bird of unknown provenance (Lowe 1924). Similar examples have turned up on occasion, but the validity and - if distinct - home range of this
taxonremains unknown. It was theorized to inhabit western Assamor the eastern Himalayas, but this is based on conjecture.
The Grey Peacock-pheasant is the national bird of
Widespread throughout its large range, the Grey Peacock-pheasant is evaluated as Least Concern on the
IUCN Red Listof Threatened Species. It is listed on Appendix II of CITES
* Database entry includes justification for why this species is of least concern
* 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. "Biol. J. Linn. Soc." 73(2): 187–198. [http://www.ingentaconnect.com/content/els/00244066/2001/00000073/00000002/art90536 HTML abstract]
* Lowe, Percy (1924): Some notes on the genus "Polyplectron". "Ibis" series 12, 1(2): 476-484.
* [http://www.birdlife.org/datazone/species/index.html?action=SpcHTMDetails.asp&sid=278&m=0 BirdLife Species Factsheet]
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