The Laughing Gull attains full adult plumage in three years. The breeding-plumaged adult has a black hood, white crescents above and below the eyes, a red bill, and a dark gray mantle. It resembles Franklin’s Gull but is noticeably larger with black (not red) legs and solid black outer primaries (wingtips) with no white. The head of the adult in winter plumage is white with a hint of gray behind the eye, and the bill is black. As with most gulls, identification of birds in immature plumages requires care and experience; consult a good field guide.