Thai National Parks

Species of Thailand

Buff-vented bulbul

Iole crypta

Harry Church Oberholser, 1918

In Thai: นกปรอดหงอนตาขาว

The buff-vented bulbul (Iole crypta) is a species of songbird in the bulbul family, Pycnonotidae.

It is found in south-eastern Myanmar, south-western Thailand, on the Malay Peninsula, Sumatra and nearby islands.

Its natural habitat is subtropical or tropical moist lowland forests.

It is threatened by habitat loss.

Taxonomy and systematics

The former scientific name, Iole olivacea Blyth, 1844, has now been ruled as permanently invalid by the IOC. Some authorities have classified the buff-vented bulbul in the genera Hypsipetes and Microscelis. Formerly, Charlotte's bulbul was considered as conspecific with the buff-vented bulbul until split by the IOC in 2017. Alternate names for the buff-vented bulbul include the crested olive bulbul, dull-brown bulbul and Finsch's olive bulbul.

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Category / Seasonal Status

BCST Category: Recorded in an apparently wild state within the last 50 years

BCST Seasonal status: Resident or presumed resident

Scientific classification

Iole crypta

Common names

  • Thai: นกปรอดหงอนตาขาว

Conservation status

Near Threatened (IUCN3.1)

Near Threatened (IUCN3.1)

Near Threatened (IUCN3.1)

Near Threatened (BirdLife)

Near Threatened (IUCN3.1)

Near Threatened (ONEP)

Near Threatened (IUCN3.1)

Near Threatened (BCST)


No photo for this species yet

Range Map

Distribution map of Buff-vented bulbul, Iole crypta in Thailand
  • Ao Phang-Nga National Park
  • Bang Lang National Park
  • Hala-Bala Wildlife Sanctuary
  • Khao Banthat Wildlife Sanctuary
  • Khao Luang National Park
  • Khao Nam Khang National Park
  • Khao Nan National Park
  • Khao Phanom Bencha National Park
  • Khao Phra - Bang Khram Wildlife Sanctuary
  • Khao Phra Thaeo Wildlife Sanctuary
  • Khao Sok National Park
  • Khlong Nakha Wildlife Sanctuary
  • Khuan Khanun District, Phatthalung
  • Khura Buri District, Phang Nga
  • Mueang Krabi District, Krabi
  • Mueang Phuket District, Phuket
  • Phi Phi Islands
  • San Kala Khiri National Park
  • Sirinat National Park
  • Sri Phang-nga National Park
  • Takua Pa District, Phang Nga
  • Thale Ban National Park
  • Ton Nga-Chang Wildlife Sanctuary
  • Ton Pariwat Wildlife Sanctuary
Range map of Iole crypta in Thailand