. . "Phacellodomus sibilatrix" . "Passeriformes" . . . . "Furnariidae" . "Phacellodomus sibilatrix P. L. Sclater 1879" . . "P. L. Sclater 1879" . . . "Chordata" . . "Aves" . "Phacellodomus" . . . "Little Thornbird" . . . . "Animalia" .