Pelecaniform: Seabird

: Included families like the Pelecanidae (pelicans), Sulidae (gannets and boobies), Phalacrocoracidae (cormorants), Fregatidae (frigatebirds), and Phaethontidae (tropicbirds).

The classification of Pelecaniformes has undergone significant revision in recent years due to molecular and genetic studies. pelecaniform seabird

The are a diverse order of aquatic birds that traditionally included all species with "totipalmate" feet—meaning all four toes are connected by webbing. Found worldwide, these birds are primarily medium to large waterbirds that depend on aquatic environments for their diet of fish and other marine life. Classification and Modern Taxonomy : Included families like the Pelecanidae (pelicans), Sulidae