This island thrush occurs in the mountains of New Guinea and on Goodenough Island. The New Guinea population is described as brownish black and as common in subalpine woods and alpine shrubland.
The New Guinea regional guide describes the pre-split papuensis group as entirely brownish black. It separately describes the Goodenough Island canescens group as having a gray head.
The New Guinea field guide describes Island Thrush as common in alpine shrubland and subalpine woods. This statement is used here only for the New Guinea papuensis group.
An extinction-risk assessment has not been added yet.