Читать книгу A Manual of Philippine Birds - Richard C. McGregor - Страница 80

 a1. Larger; back and scapulars glossy green or coppery bronze.b1. Nape with a coppery chestnut patch. nuchalis (p. 43)b2. Nape without a coppery chestnut patch.c1. Gray of mantle lighter and more sharply defined from the green back.d1. Upper surface of tail lighter and greener. chalybura (p. 43)d2. Upper surface of tail darker and bluer. palawanensis (p. 44)c2. Gray of mantle darker and less sharply defined. ænea (p. 44)

 a2. Smaller; back and scapulars glossy brown with but little metallic color.b1. Under parts lighter. pickeringi (p. 44)b2. Under parts darker. langhornei (p. 45)