Adult Description
- Medium-sized to small gull.
- Small, unmarked yellow bill.
- Head and underparts white.
- Back medium gray.
- Wingtips black, without white spots, as if dipped in ink.
- Legs black.
Immature Description
Juvenile with white underparts, gray back, gray patches on nape and crown, dark spot at the ears, black collar, black wingtips, and a dark bar across the wing. Wings show a dark "M" pattern in flight. Tail white with a black tip. Legs black.