A large, stocky pigeon of islands. Gray head, emerald green back and wings, blue tail and rusty vent. Two different races occur. A red-eyed, knob-billed race on small NW islands, and a yellow-eyed race lacking the knob on the Bay Islands. Found in a variety of forested habitats, and some wander between islands. Similar Spectacled Imperial-Pigeon may co-occur but the NW race of Spice lacks the knob. Voice a deep, gravelly, 2-note “grrr-waw! With the second note higher than the first.