DESCRIPTION. 183 



153. Blue Jay. 



Length about 12 inches, tail about 5J inches, and 

 bill about 1 inch long. Head with conspicuous 

 crest. Adults : Above, purplish-blue ; wings and 

 tail bright cobalt-blue, barred with black and tip- 

 ped with white ; black collar from under the crest 

 to across chest ; below, throat purplish-whitish, 

 breast and sides grayish, other lower parts white. 

 Young : Plumage duller. 



154. Canada Jay. 



Length about 11 J inches, tail about 6 inches, 

 and bill about 1 inch long. Head without crest. 

 Above, dusky-grayish, lighter on forehead and 

 darker on hind-head ; below, light brownish-gray, 

 paler than back. Young : Sooty-slate, chin, nasal- 

 tufts and lores black. 



155. Northern Raven. 



Length about 26 inches, tail about 10 inches, and 

 bill about 3 inches long. Plumage black, more or 

 less glossy, feathers of throat lanceolate. 



156. American Crow. 



Length about 21 inches, tail about 8 inches, and 

 bill about 2J inches long. Plumage glossy-black, 

 glossed with violet. 



157. Bobolink. 



Length about 7 inches, tail about 2f inches long. 



