Eagles and Gyrfalcons 



349. 



349. Golden Eagle {Aquila chrysaetos). L. tf, 30- 



35: £ , 35-40; Ex. cf, 7884; V, 84-90. (Ridgw.) Legs 

 feathered to toes. Ads. Back of head and nape paler 

 than body; basal two-thirds of tail white. Yng. Base 

 of tail with broken grayish bars. Notes. A shrill, 

 kee-kee-kee, and, when alarmed, kiah-kiab repeated a 

 number of times. (Bendire.) 



Range — Northern parts of northern hemisphere; in America south 

 into Mexico; rare east of Mississippi, more common in Rocky Mount- 

 ains and mountains of Pacific coast. 



352. Bald Eagle [Haliceetus leucocephalus). L. $, 



33; + , 35; Ex. rj\ 84; 9> 89. Legs not feathered to 

 toes. Ads. Head, neck and tail white. Yng. Head 

 and body blackish, more or less varied with white; 

 tail blackish mottled with white. Notes. Of the male, 

 a loud, clear cac cac-cac; of the female harsh and brok- 

 en. (Ralph.) 



Range. — North America breeding locally throughout its range, more 

 frequently near the Atlantic coast: resident in United States. 



352a. Alaska Bald Eagle [H.J. alascanus). Simi- 

 lar to No. 352, but larger. W. d\ 23.8; 9, 24.6; T. 

 J\ 11.5; 9, 12; Tar. rj\ 4.1; 9,3-7- (Townsend.) 



Range. — Alaska. 



353. White Gyrfalcon {Falco islandus) . L. J 1 , 22; 



? , 24. Tarsus feathered in front nearly to toes; only 

 outer primary notched. Under tail coverts pure white. 

 Ads. Below white with few or no black markings. 



Yng. Dark areas above larger, below with elongate 

 blackish spots. 



Range. — Arctic regions, in America south in winter casually to 

 Maine. 



354. Gray Gyrfalcon {Falco rusticolus). L. tf, 22; 



9 , 24. Tarsus feathered in front nearly to toes; only 

 outer primary notched. Under tail coverts with du>ky 

 margins. Ads. Crown usually more white than 

 dusky; above barred with blackish and grayish; below 

 white, breast streaked; sides and legs barred with 

 dusky. Yng. Above dark brown brown with broken 

 buffy bars and margins tail with while and 'ir>wn 

 bars of nearly equal width below white everywhere 

 streaked with blackish. 



Range. — Arctic regions; south in winter to the northern border of 

 the United States; casually as far as Kansas and Maine. 



354a. Gyrfalcon (F. r. gjirfalco). Similar to No. 

 354, but head usually with more dusky than white; 

 back in ad. indistinctly barred with grayish. Yng. 

 With dark stripes of lower parts usually about equal in 

 width to white interspaces. 



Range. — "Northern Europe and Arctic America, from northern Labra 

 dor and coasts of Hudson Bay to Alaska" (Ridgw.); south in winter 

 Casually, to northern b< rdcr of United States as far as Long Island. 



354b. Black Gyrfalcon (F. r. obsoletus). Similar 

 to No. 354, but much darker; above plain dusky with 

 few or no buffy markings; below dusky margined w i.h 

 buffy, the former prevailing. Notes. A chattering 

 ke-a, ke-a, ke-a, blending into a rattling scream. 

 { Turner. ) 



Range.— Labrador; south in winter to northern New England; cas 

 uallv to Long Island. 



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