"Aves" . "Chordata" . . . "Ardea melanocephala" . . . "Black-Headed Heron" . . "Animalia" . "Ciconiiformes" . . . . "Ardeidae" . . . "Ardea melanocephala Vigors and Children 1826" . . . "Ardea" . . "Vigors and Children 1826" . . . .