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



of outer tail feather, white. In immature and winter birds, the horn- 

 like tuft of feathers is lacking, or indistinct. 



Otocoris alpestris, and races. 

 Horned Lark. 

 See Nos. 216, 216a, and 216b. 



Family CORVIDtE. Crows, Jays, etc. 



Subfamily GARRULINtE. Magpies and Jays. 



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. 



*GROUP 1. Wing, less than 5.50 inches long. 



Upper parts, pale blue or purplish blue; tail, 

 bright blue, barred with black and (except middle 

 feathers) tipped with white; wings, blue, marked 

 with white; under parts, ashy white; breast with 

 black band. Cyanocitta cristata. 



Blue Jay. 



See No. 218. 



I* For directions for measurement, see page 21. 



