Читать книгу A Manual of Philippine Birds - Richard C. McGregor - Страница 20

 a1 Much smaller; length less than 150 mm.; head without crest or comb; spurs absent Excalfactoria (p. 12)

 a2 Much larger; length more than 350 mm.; head crested or with a comb; spurs present in the male.b1. No crest but with a fleshy comb; tail-coverts without ocelli; male with one pair of spurs Gallus (p. 13)b2. No comb but with an elongated crest; longer tail-coverts ocellated; male with two or three pairs of spurs Polyplectron (p. 16)