. . . "Circus macrourus (S. G. Gmelin 1770)" . . . "Aves" . . "Pallid Harrier" . "Circus" . . "Circus macrourus" . "Animalia" . "Falconiformes" . . . . . . "(S. G. Gmelin 1770)" . "Accipitridae" . . . . "Chordata" . .