THE PRAIRIE CHICKEN 119 



that no one has made a success of domesticating this 

 valuable bird. 



Key to the Families of Gallinas 



Cracid-5: — Curassows and Guans. 



With the hind toe inserted on the level of the anterior toes, and 



more than half as long as the lateral toe, 

 Meleagridid^ — Turkeys. 



Large, long-necked birds, with the hind toe less than half as Long 



as the lateral, and inserted above the level of the rest; legs with 



spurs, and entire head unfeathered. 

 Odontophorid^ — American Quails. 



Small or moderate-sized, rather short-necked birds, without spurs, 



and with the head feathered ; tarsus and nostrils entirely unfeathered. 

 Tetraonid.e — Grouse. 



Moderate or rather large sized birds with the tarsus at least partly 



feathered, and the nostrils wholly so. 



