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



outer webs, slate gray and narrowly tipped with white; tail, ashy 

 gray; tipped with white. 



Length, about 10.50; wing, 5.50 to 5.80; tail, 6; bill, .72. 



The Canada Jay, while it is not known to range as far south as 

 Illinois, is a common winter visitant in the pine regions of northern 

 Wisconsin and accidental as far south as Racine. It may breed in 

 northern Wisconsin as it has been found nesting near Mahoning, 

 northern Michigan, by Mr. O. B. Warren (Auk, Vol. XVI, p. 12), and 

 in northern Minnesota (Cook, Bird Migr. Miss. Val., 1888, p. 158). 



This is a familiar bird about logging camps in the north woods, 

 where it is known by the name of " Camp-robber " and " Whiskey 

 Jack. " 



Subfamily CORVINiE. 



Genus CORVUS Linn. 



220. Corvus corax principalis Ridgw. 



Northern Raven. 



Distr. : Northern North America, south to British Columbia 

 Michigan, Wisconsin, New Brunswick, and Maine, casual in Illinois. 

 Replaced by the American Raven (C. c. sinuatus) in the western 

 United States, from Missouri, southern Illinois, and central Missis- 

 sippi Valley west to California and south to Mexico and Guatemala. 



