Vol. 45 No. 2, 2006
Taxonomic Status of Populations of the Light-vented Bulbul Pycnonotus sinensis (Gmelin, 1789)
(Passeriformes: Pycnonotidae) in Taiwan and the Southern Ryukyus
Institute for Ornithology, 115 Konoyama, Abiko, Chiba 270-1145, Japan
Yamasaki (2006) Populations of the Light-vented Bulbul
Pycnonotus sinensis (Gmelin, 1789) from continental China, Taiwan, and
the southern Ryukyus were compared on the basis of 3 color and 6
morphometric characters in 177 specimens. The Taiwanese sample markedly
differed from the other samples. It showed less-distinct yellow streaks
on the abdomen, a wider white nape patch, and longer hind claws. On the
other hand, samples from continental China and the southern Ryukyus did
not mutually differ in any examined characters. For that reason, I
recognized P. s. formosae Hartert, 1910 from Taiwan as a valid
subspecies, whereas P. s. orii Kuroda, 1923 from the southern Ryukyus
was regarded as a junior synonym of the nominotypical subspecies from
continental China. Pycnonotus s. hainanus (Swinhoe, 1870) from the
southernmost part of continental China and Hainan I. was retained as a
3rd subspecies. It clearly differs from the others in having no white
feathers on the nape.
Key words: Pycnonotus
sinensis, Subspecies classification, Plumage color, Morphometrics.
*Correspondence: Tel: 81-4-71821101. Fax: 81-4-71821106.