The large, nomadic pigeon of mangroves and riverine forests. Note the distinctive, full black collar that narrows at the front and meets the maroon back. Black tail with white band across. Small flocks often seen in flight or perched up on exposed branches. Unmistakable when seen perched, but in flight similar to Pinon’s Imperial-Pigeon. Collared Imperial-Pigeon is much more likely in mangroves. Call, a deep, muffled “woo-oo pooo” with the first 2-note call falling and the last, lower in pitch.