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. Ground birds with short legs. 



Plumage brown and gray, Ruffed Grouse.- 



Birds usually seen flying or perching, not having notably 

 long neck or legs. 



A. Plumage mainly white or very light colored. 



Face flattened, eyes in front ; uncommon winter visitor, 



Snovty Owl. 

 Face not flattened ; eyes on sides of head ; accidental' 

 visitor, near water, Herring Gull. 



B. Plumage black. 



Length under 20 inches, Crow. 



Length over 24 inches. Raven. . 



C. Plumage neither black nor nearly white. 



a. Face flat; eyes in front; bill short and strongly 

 hooked, 

 b. Head with prominent tufts of feathers, like ears. 



Great Horned Owl.. 

 bb. Head without such feather tufts. 



Length only 20 inches, Barsed Owl.- 



Length 27 inches. Great Gray Owl. 



aa. Face not flat ; eyes on sides of head. 



b. Length over 2J feet ; extent of wings about 6 feet. 

 Lower half of tarsus bare ; head of adult white, 



Bald Eagle. 

 Tarsus feathered to base of toes ; head not white,. 



Golden Eagle. - 

 bb . Length 2 feet or less ; extent under 5 feet, 

 c. Upper tail coverts conspicuously white. 



Marsh Hawk. 



CO. Upper tail coverts not conspicuously white. 



d. General coloration black (or very dark. 



brown) and white. 



Almost pure white beneath, haunting rivers 



and lakes, Fish Hawk.- 



