Читать книгу A Manual of Philippine Birds - Richard C. McGregor - Страница 133

 a1. Chin white; upper parts more or less spotted with white.b1. Smaller; wing less than 125 mm.; breast uniform; no white eyebrow. striata (p. 67)b2. Larger; wing more than 140 mm.; breast barred with black and white; a white eyebrow. philippensis (p. 67)

 a2. Chin black; upper parts uniform. torquata (p. 68)