The family Fregatidae is commonly known as the Frigatebirds. These birds are known for their long and narrow wings, a deeply forked tail, and a hooked beak. Frigatebirds are also known for their ability to stay in the air for long periods, using thermal currents to soar over the ocean. Synonyms for the family Fregatidae include the frigate bird family, frigatebirds, man-o'-war birds, and pirate birds. These synonyms all refer to the same bird family, which is found in tropical and subtropical regions around the world. Frigatebirds are impressive birds that are known for their aerial agility and striking appearance.