Gull the exceptions being Sabine's gull and swallow-tailed gulls, which have forked tails, and Ross's gull, which has a wedge-shaped tail. Gulls have moderately long legs, especially when compared to the similar terns, with fully webbed feet. The bill is generally heavy and slightly hooked, with the larger species having stouter bills than the smaller species. The bill colour is often yellow with a red spot for the larger white-headed species and red, dark red or black in the smaller species. The gulls are generalist feeders. Indeed, they are the least specialised of all the seabirds, and their morphology allows for
Fork-tailed storm petrel their tail. The fork-tailed storm petrel is a part of the tubenose order Procellariformes and family Hydrobatidae. The genus "Oceanodroma" arises from Ancient Greek "okeanos dromos", meaning "ocean runner", reflecting the storm petrel's distinct foraging style. Their specific name "furcata" is Latin for branched or forked, derived from "furcatus", referring to their characteristic forked tail. 2 subspecies are recognized: The major differences between the two subspecies are slight size and plumage differences, where southern populations appear somewhat smaller and darker. Southern populations also begin and end the breeding season earlier than their northern counterparts. However, no molecular genetic analysis has