The female lays two to three greenish to olive brown eggs with dark blotches. Both parents participate in incubation, which requires 21 to 25 days. Young begin to make their first flights at four to six weeks of age. Laughing Gulls occupy colony sites in North Carolina from April through August. Laughing Gulls, like other gull species, are opportunistic feeders.
Food includes fish, insects and various marine invertebrates.
Laughing Gulls also frequently forage around garbage dumps. Stable, approximately 12,000 nesting pairs.