Eagles and Gyrfalcons 



349. 



,353. 



354 b. 



349. Golden Eagle (Aquila chrvsaews). L. <?, 30- 

 35; 9, 35-4o; Ex. d\ 7884; 9, 84-90. (Ridgw.) Legs 

 feathereJ 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-kidb 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. c?> 

 33; 9, 35; Ex. J\ 84; 9, 89. Legs not feathered lo 

 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. L alascanus}. Simi- 

 lar to No. 35^, but larger. W. J, 23.8; 9, 24.6; T. 

 c?, 11.5; 9, 12; Tar. cf, 4.1; 9,3.7. (Townsend.) 



Range. Alaska. 



353. White Gyrfalcon (Falco islandus) . L. c?, 22; 

 9, 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. c?j 22; 

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

 outer primary notched. Under tail coverts with dusky 

 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 white and brown 

 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. gyrfalco). 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 border 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 with 

 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- 

 ually to Long Island. 



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