Family FREGATIDAE (POUNCING FISHERS).
Bill long, nostrils in a groove, basal and linear, both, mandibles bent downwards. Dark-coloured oceanic birds. Tail forked. Web between toes deeply emarginate. Single egg.
Frigate Birds live by piracy in tropical seas just as the Skuas do in colder latitudes, and use their powerful flight in pursuing Gannets, Gulls, and Terns, in order to rob them of their prey.