This seabird is the only black-headed gull seen in the West Indies in summer. It is a common 16 inch long resident of Antigua with a wing spread of about 42 ins, and may be found near the seashore, also in fields near the marine environment. The bird feeds on small fish swimming near the surface, but it may also take earthworms in fields after a shower of heavy rain. Its call includes a long drawn out hah-ha-ha, like an excited laughing from which its name is derived.