Pachycephala is a genus of birds native to Oceania and Southeast Asia. They are commonly known as typical whistlers. Older guidebooks may refer to them as thickheads.

1/ Mangrove Whistler (Bách thanh lưng lâu, Pachycephala grisola also Pachycephala cinerea)

Alternate names for the mangrove whistler include the grey thickhead and white-bellied whistler.