The Thick-billed Berrypecker is a berrypecker described from the Arfak Mountains of north-western New Guinea. The early description of the adult male records olive-green upperparts and pearly-grey underparts. The species account classifies it as a forest-dwelling fruit eater.
It is 11–14 cm long. The early description of the adult male records olive-green upperparts and pearly-grey underparts.
The species account classifies it as a forest-dwelling bird that feeds mainly on fruit.
An extinction-risk assessment has not been added yet.