About Alcippe peracensis Sharpe, 1887
The mountain fulvetta (Alcippe peracensis) is a bird species in the family Leiothrichidae, measuring 14 to 15.5 cm in length. It is found in Cambodia, Laos, Malaysia, Thailand, and Vietnam, where it inhabits subtropical or tropical moist montane forests. Alcippe grotei, the black-browed fulvetta, is sometimes considered the same species as the mountain fulvetta. However, the two forms differ in morphology, vocalizations, and altitude range: black-browed fulvetta occurs primarily below 400 m, while mountain fulvetta occurs above 900 m. Both species have a warm brown back and tail, whitish underparts, a grey face, and a slate grey crown bordered below by a black line. Black-browed fulvettas can be distinguished by their brown flanks and weaker white eyering. The mountain fulvetta’s song is transcribed as yi-yuii-uwee-uwee, while the black-browed fulvetta’s song is transcribed as yu-chi-chiwi-chuwoo, yu-uwit-ii-uwoo. Two subspecies of mountain fulvetta are currently recognized: A. p. annamensis Robinson, HC & Kloss, CB, 1919, found in southern Laos’ Bolaven Plateau, southern Annam, and adjacent Cochinchina; and A. p. peracensis Sharpe, RB, 1887, found in the highlands of the Malay Peninsula from northern Perak to southern Selangor and Pahang.
