Olive Bulbul (Iole viridescens) [XC336919]
by Sontaya Manawatthana from Ban Nai Chong, Tambon Thab Prik, Amphoe Mueang Krabi, Chang Wat Krabi, Thailand (call)
Olive Bulbul (Iole viridescens) [XC701870]
by GABRIEL LEITE from Kaeng Krachan National Park, Thailand (call)
Subspecies
Birds in Bangladesh apparently belong to subspecies cacharensis, but further study is needed.
The following 5 subspecies are recognised:
cacharensis (Deignan, 1948) - North-eastern India (southern Assam hills, extreme western Manipur, and Meghalaya) and south-eastern Bangladesh (Chittagong). Considered by some authors to be a distinct species, Cachar Bulbul (Iole cacharensis).
myitkyinensis (Deignan, 1948) - Western and eastern Myanmar. Considered by some authors to be a subspecies of Grey-eyed Bulbul (Iole propinqua).
viridescens Blyth, 1845 - South-western and southern Myanmar (including Arakan) and south-western Thailand.
lekhakuni (Deignan, 1954) - Southern Myanmar (northern Tenasserim) and western Thailand (including Kanchanaburi). Considered by some authors to be a subspecies of Grey-eyed Bulbul (Iole propinqua).
cinnamomeoventris Baker, ECS, 1917 - Southern Myanmar (southern Tenasserim), peninsular Thailand and extreme northern Peninsular Malaysia. Considered by some authors to be a subspecies of Grey-eyed Bulbul (Iole propinqua).