1) Boatswain bird 2) Pelecaniform seabird 3) Tropic bird 1) Boatswainbird 2) Bosunbird 
Tropicbirds are a family, Phaethontidae, of tropical pelagic seabirds now classified in their own order Phaethontiformes. Their relationship to other living birds is unclear, and they appear to have no close relatives. There are three species in one genus, Phaethon. They have predominantly white plumage with elongated tail feathers and small feebl...