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Panama amazon
The Panama amazon, also known as the Panama yellow-headed amazon, (''Amazona ochrocephala panamensis'') is a subspecies of the yellow-crowned amazon, and is endemic to Panama (including the Pearl Islands and Coiba) and northwest Colombia.〔(【引用サイトリンク】Zoological Nomenclature Resource: Psittaciformes (Version 9.022) )〕 In aviculture, it is sometimes listed as a separate species (''Amazona panamensis''),〔(【引用サイトリンク】title=Panama Amazon, Panama Yellow-headed Amazon, Amazona panamensis )〕 and this is potentially correct; at least as a phylogenetic species.〔Eberhard, J., & E. Bermingham. 2004. ''Phylogeny and Biogeography of the Amazona ochrocephala (Aves: Psittacidae) Complex.'' Auk 121(2): 318-332〕〔Russello, M. A., & Amato, G. (2004). ''A molecular phylogeny of Amazona: implications for Neotropical parrot biogeography, taxonomy, and conservation.'' Molecular Phylogenetics and Evolution. 30(2): 421-437〕
==Description==
Adults are approximately in length, are bright green with a yellow area on the forehead, and a horn-colored (gray) beak, sometimes with a dark tip, but lacking the reddish coloring on the upper mandible that is present in the nominate yellow-crowned amazon.〔(''Amazona ochrocephala'' ). Lexicon of Parrots, online version. Arndt-Verlag. Accessed 16 February 2010.〕 The plumage of the body is green with a little coloring at the brims of the wings. The yellow on the crown is more restricted, and tends to be triangular, compared with the more extensive and rounder distribution of yellow on the nominate race. There is much variation in coloring among individuals.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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