A large, stocky pigeon that is found on islands off the shore of Halmahera and far western Papua. Gray head, emerald-green back and wings, blue tail and rusty vent. The eye is red and there is a large knob-like projection on the front top of the bill. Found in a variety of forested habitats, and some wander between islands, sometimes straying to the mainland. Voice a deep, gravelly, 2-note “grrr-waw”, with the second note higher than the first. Similar Spectacled Imperial-Pigeon may co-occur but is separated by its white spectacle around the eye and lack of a knob on the bill.