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, 2i6a, and 2i6b. 



Family CORVID^. Crows, Jays, etc. 



Subfamily GARRULIN^. 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,jless 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. 



vSee No. 218. 



*For directions for measurement, see page 21. 



