A big grayish brown, mottled, "eared" owl. Its 

 common call is a loud hoot; ivhoo, hoo- hoo, hoo, 

 whooo, whooo. 



376. Snowy Owl — Nyctea nyctea. 



Large. Length 25 inches. 



White, but more or less barred with blackish or 

 grayish brown; legs, feet and toes heavily feath- 

 ered; eyes yellow; no ear-tufts. 



A big white owl ; cannot be mistaken for any 

 other; a winter visitant. This owl is active dur- 

 ing the day. 



(If not in the foregoing groups:) 



BIRDS OF ROBIN SIZE OR LARGER 



325. Bald Eagle — Haliaeetus leucocephalus 

 leucocephalus. 



Length, male 32^8 inches; female 35J/2 inches. 



Head, neck and tail white, the rest of plumage 

 blackish; bill yellow; not feathered to toes. 



Immature specimens are without white on the 

 head and neck; the tail is only marked with white; 

 bill black. 



364. Osprey — Pandion haliaetus carolinensis. 



Length 23^ inches. 



Male — Underparts white, breast sometimes 

 spotted with brownish; upperparts blackish; head 

 and back of neck varied with white. Female — 

 Similar, but the breast always spotted with gray- 

 ish brown. 



This is the Fish Hawk; much the largest of our 

 hawks. It is seen near lakes and rivers. 



334. Goshawk — Astur atricapillus atricapillns. 



A very large hawk. Length, male 22 inches; fe- 

 male 24 inches. Upperparts bluish slate; head 

 blackish; a white line over and behind eye; under- 

 parts everywhere evenly barred with gray and 



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