. . . "Creagrus furcatus (Neboux 1846)" . "Swallow-tailed Gull" . "Creagrus" . . "Charadriiformes" . . . . "Creagrus furcatus" . "Aves" . . . "(Neboux 1846)" . "Chordata" . . . . . . "Animalia" . . . "Laridae" .