212 KEY TO THE BIRDS OF EASTERN NORTH AMERIWUA. 
Plumage, black; wing, under 11.50; tarsus, under 2.10; bill, under 1.80. 
Fish Crow. 
Corvus OSSUTTAGUS. 
See No. 368. 
Group 6. Wing, over 15 inches long. 
Raven. 
General plumage, biack. 
Raven. 
Corvus corax principalis. 
See No. 365. 
