"Animalia" . . . . "Aves" . "Chordata" . . . . . . "Catharus ustulatus" . . . . . . "Turdidae" . . "Swainson's Thrush" . "Catharus ustulatus (Nuttall 1840)" . "Catharus" . . . . "(Nuttall 1840)" . "Passeriformes" . .