This monarch uses forests in New Guinea and far northeastern Australia. In the nominate New Guinea subspecies, the area around the eye is gray. Migration is reported only for the Australian subspecies.
In nominate M. f. frater from northwestern New Guinea, the entire area around the eye is gray, including the patch between the eye and the black lores.
The 2023 paper describes the species in low- to mid-elevation forests across New Guinea and far northeastern Australia. It reports migration and breeding in northeastern Australia from about November to March only for M. f. canescens.
An extinction-risk assessment has not been added yet.