"Animalia" . . "Spizella pusilla" . . . "Chordata" . . "Fringillidae" . . . . "Spizella" . "(A. Wilson 1810)" . . "Field Sparrow" . "Spizella pusilla (A. Wilson 1810)" . "Passeriformes" . "Aves" . . . . . . . . . . . . .