World Bird List

Species factsheet
Ashy Bulbul (Hemixos flavala)

Order: Hemixos flavala
Family: Bulbuls (Pycnonotidae)

Voices can be found here (external link)
Subspecies and Distribution
Subspecie Distribution
flavala e Himalayas, ne Bangladesh, nw Myanmar and s China
hildebrandi e Myanmar and nw Thailand
davisoni se Myanmar and sw Thailand
bourdellei s China, e Thailand, n and c Laos
remotus s Indochina