Buff-vented Bulbul (Iole crypta) [XC408515]
by Ding Li Yong from Ulu Muda, Kedah (nr Earth Lodge), Malaysia (call)
Buff-vented Bulbul (Iole crypta) [XC855029]
by id from Taman Negara, Sungai Relau, Merapoh, Pahang, Malaysia (call)
Subspecies
Proposed subspecies perplexa (from Labuan Kelambu, in Borneo) invalid, as described from a standard juvenile specimen.
The following 2 subspecies are recognised:
olivacea Oberholser, 1918 - Southern Myanmar (Tenasserim), southern Thailand (south of 14° north), Peninsular Malaysia, Riau Archipelago and Sumatra (including Batu Is, Bangka and Belitung).
charlottae (Finsch, 1867) - Anambas Is (east of Peninsular Malaysia), northern Natunas and Borneo (including Banggi I). Considered by some authors to be a distinct species, Charlotte's Bulbul (Iole charlottae).