114 
GROUSE, PARTRIDGES, QUAILS, ETC. 
3'. Sides of neck without tuft of feathers. 
4. Tail strikingly graduated, middle feathers 
much the longest. 
Pedioecetes, p. 131. 
Fig. 185. 4'. Tail not strikingly graduated, middle feath¬ 
ers not much the longest. 
5. Toes feathered . . Lagopus, p. 128. 
Fig. 186. 
Fig. 187. 
5'. Toes naked. 
6 . Tail of 20 feathers. 
Dendragapus, p. 124. 
6 .' Tail of 16 feathers. 
Canacliites, 126. 
T. Legs not feathered down to base of toes. 
Fig. 188. 
2. Neck with two blackish or brownish ruffs. 
Bonasa, p. 127. 
2'. Neck without ruffs. 
3. Tail much less than half as long as wing ; 
claws long .... Cyrtonyx, p. 122. 
Fig. 189. 
Fig. 190. 
3'. Tail more than half as long as wing; claws 
moderate. 
4. Head not crested . . . Colin us, p. 114. 
4'. Head with crest. 
5. Crest blended with feathers of crown. 
Callipepla, p. 118. 
5'. Crest distinct from feathers of crown. 
6 . Crest long and straight (2-3 inches). 
Oreortyx, p. 117. 
6 '. Crest upright, recurved and club- 
shaped (about 1 inch). 
Lophortyx, p. 119. 
GENUS COLINUS. 
General Characters. — Feathers of crown lengthened and erectile, but 
not forming a distinct crest; tail about three fifths as long as wing ; wing 
less than five inches ; plumage of upper parts spotted and barred. 
KEY TO ADULT MALES. 
1. Throat black.ridgwayi, p. 116. 
1'. Throat white. 
2. Under parts lightly and irregularly barred . virginianus, p. 115. 
2'. Under parts heavily and closely barred ... texanus, p. 116. 
