13° 



Field Museum of Natural History — Zoology, Vol. TX. 



N. 



Family MICROPODID^. 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 CUCULID^. Cuckoos. 

 See page 161. 



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

 being fastened together for more than half their length. 



■r^ 



Family ALCEDINID^. 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. 



U\..*. 



Family CORVID.ZE. Subfamily GARRULINiE. Jays. 



See page 176. 



