130 Field Museum of Natural History — Zoology, Vol. IX. 



Family MICROPODIDiE. Swifts. 



See page 169. 



First primary, about half as long as third ; 

 feet, zygodactyle (toes, two in front, two be- 

 hind) ; outer tail feathers, very much shorter 

 than middle feathers. 



Family CUCULIDiE. Cuckoos. 

 See page 161. 



Feet, syndactyle; toes, four, the middle and outer ones joined, 

 being fastened together for more than half their length. 



Family ALCEmNW JE. Kingfishers. 



See page 162. 



First primary, much shorter than second, always less than three- 

 fourths as long as third; fourth, or fifth primary, longest; bill, stout 

 and strong; the nostrils, concealed by coarse, hair-like feathers; 

 outer tail feathers, shorter than middle feathers. 



Family CORVID^. Subfamily GARRULIN^. Jays. 



See page 176. 



