Читать книгу A Manual of Philippine Birds - Richard C. McGregor - Страница 55

 a1. Culmen more than 19 mm.; longer than tarsus.b1. Breast not mottled.c1. Under tail-coverts cinnamon or ocherous-brown.d1. Breast brown; wing longer amethystina (p. 30)d2. Breast pearly ash; wing shorter brunneiceps (p. 32)c2. Under tail-coverts ashy gray.d1. Under tail-coverts not tipped with fulvous cinereiceps (p. 31)d2. Under tail-coverts slightly tipped with fulvous frontalis (p. 32)b2. Breast distinctly mottled maculipectus (p. 33)

 a2. Culmen less than 17 mm.; equal to or less than tarsus.b1. Forehead gray or fulvous, not white.c1. Throat and cheeks deep ruddy fulvous.d1. Throat darker; occiput dull amethystine-rufous leucotis (p. 33)d2. Throat lighter; occiput bright coppery amethystine occipitalis (p. 34)c2. Throat and cheeks pale fulvous.d1. Forehead grayish; light streak under eye fulvous nigrorum (p. 35)d2. Forehead pale fulvous; light streak under eye white brevirostris (p. 35)b3. Forehead and chin pure white albifrons (p. 36)