90 



Gen. LXII. HALI^ETUS Savigny (1809). 



Size of, and with general characters of Aquila, btit 

 tarsus not feathered more than half way down ; 

 the front scutellated, sides and back reticulated ; 

 no membrane between the toes ; head not crested, 

 but feathers of neck long and lanceolate. 



228. 



Length $ 36-38 ; wing 26 in., c? length 33, 

 wing 24 in. ; general plumage brown, with 

 paler greyish margins to many of the feathers 

 above ; head and neck much paler, nearly 

 white in very old birds, with ashy brown 

 streaks ; quills black, shaded with grey ex- 

 ternally ; longer upper tail-coverts and tail 

 pure white ; bill and feet yellow. Immature : 

 head and neck blackish brown ; general 

 plumage fulvous brown, mottled with dark 

 brown ; tail brown. 



Halice'etus albicilla (Linn.), S.N., i., p. 89 (1758). 

 [" Europa, America " — latter errore — type 

 loc. Sweden sugg. Hartert.] 

 White-tailed Eagle. 



Europe, S. to 

 Mediterra- 

 nean on E. 

 side ; Iceland, 

 Greenland ;* 

 Asia Minor, 

 N. and E. 

 Asiat ; in 

 winter S. to 

 India. 



229. 



Size similar ; wing 23-25 in. ; head and neck 



all round, rump, upper tail-coverts and ta.il 



pure white. Immature ; head and neck 



black and tail mingled white and black at 



first. 



Halice'etus leucocephalus leucocephalits (Linn.), 



S.N., ed. xii., i., p. 124 (1766). [ex Catesby— 



Carolina.] 



Bald Eagle. 



United 

 States, S. to 

 Lower 

 California & 

 N. Mexico. 



* The Greenland form may be separable, cf. Hartert, Vog. Pal. Fauna 

 p. 1178 (1914) but material is lacking. 



f Bishop records it from Alaska and Brit. Columbia ; cf. Biol. Surv. 

 U.S. Dept. Agric, xix., pp. 73-74 (1900) ; Auk, xxii., pp. 79-80 (1906). 



