Читать книгу A Manual of Philippine Birds - Richard C. McGregor - Страница 43

 a1. Under tail-coverts long, their tips reaching well beyond toes; size generally smaller; length, 340 mm. or less.b1. First primary not attenuated; third primary scooped on middle of inner web, except in Phapitreron which has mostly brown plumage. Treroninæ (p. 24)b2. First primary abruptly attenuated, except in Spilotreron which has mostly green plumage; third primary normal Ptilopodinæ (p. 36)

 a2. Under tail-coverts moderate, their tips reaching little if any beyond toes; size generally larger; length, 360 mm. or more Muscadivorinæ (p. 42)