176 FiiiLi) MusKUM OF Natural History — Zoology, Vol. IX. 



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

 hke tuft of feathers is lacking, or indistinct. 



Otocoris alpestris, and races. 

 Horned Lark. 

 See Nos. 216, 216a, and 216I). 



1^'amily CORVlD^^l. Crows, fays, etc. 



Subfamily (iARRULINi*:. 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, conc^iled 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. Cyauocitta cristata. 



Blue Jay. 



See No. 21S. 



■For directions for measurement, see page 21. 



