. . "R\u00FCppell 1836" . "Chordata" . . "Corvus" . . . . "Corvus crassirostris" . . "Passeriformes" . "Animalia" . . . . "Corvus crassirostris R\u00FCppell 1836" . . "Aves" . . . "Thick-billed Raven" . . "Corvidae" . .