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, a literal translation of the genus name, which is derived from Ancient Greek παχύς (pakhús), meaning "thick", and κεφαλή (kephalḗ), meaning "head". This lineage originated in Australo-Papua and later colonized the Indonesian and Philippine archipelagos to the west and the Pacific archipelagos to the east.

...