Tl'l K'ki'oi!!' ov Srvi'K (iKonxiisr. 



The yoimg ha\o a greater expanse of wing thaji the adults, and have 

 not the white head and tail. They do not assume perfect plumage 

 until the third year. The first year they are black, and are known 

 as the T>lack Eagle, also "Washington Eagle." The second year, they 

 ai-e commonly called "Gray Eagles." It is well to recall that this and 

 the Golden Eagle are the only Eagles in the T^nited States. 



The favorite food of the Bald Eagle is fish. These it picks up on 

 the heach, where they are strewn; tiikes hy robbery from the Osprey; 

 or, when it can get them in no other way. catches itself. February 

 '34, 1891, Mr. K. Deane saw one of them fishing at English Lake. It 

 poised in the air, after the manner of a Kingfisher, sustaining itself 

 by rapid Tibration of its wings, then suddenly "let go'^ and fairly dived 

 to tJie water. This was repeated twice. Failing in procuring fish, it 

 preys upon all kinds of waterfowl. They also eat lambs, small pigs 

 and poultry, ilr. E. J. Ohansler informs me of a Bald Eagle that 

 was killed in Knox County, October 1. 1896. which had killed two 

 lambs. Mice and other rodents form an in\port<int article of their 

 food, and. all in all, they are considered to belong to that class of 

 rapacious birds whose lives are mostly beneficial. 



SlKKAMllV FALCOXlN.l-:. FAT.CON!*. 



7S. Gbxvs FALCO LiNN.Krs. 



ii'. Only tirst primarv with inner web eiuarginated; first ijnill longer tlian the- 

 fonrth; tarsus shorter than middle toe, and soaroely feathered below the knee; 

 winy over 11.00. Subgenus Khyxcuopox Nitzsoh. 



F. peregrinus anatuni i^lnniap.^. 141 

 ((-. Two outer primaries with inner webs emarginatod : tirst quill shorter than the 

 fourth. 

 /)'. Basal joints of toes with siuall hexagonal scales; tarsus about equal to mid- 

 dle toe. Size small; wing, 9.00 or less; sexes unlike. 



Subgenus .F^.vi.ox Kaup. F. coluiubarius Linn. 142 

 /)-. Hasal ji>ints^>f toes covered with transverse plates; tarsus longer than middle 

 toe; size small, wing 8.00 or less; sexes difl'erent. 



Subgenus Tixxi'xri'Lrs Vieillot. F. sparverius Linn. 143 



Subs:onus Khynohodon Nit/soh. 



'^141. (•>'>t)). Falco peregriniis anatum (Bona p.). 



Duck Hawk. 



Adult. — First and second wing feathers equal and longest. Top 

 of head, black, decidedly . darker than back: chest, creamy-butT. 

 bulTy-white, or pure white, often unspotted, never very heavily 

 spotted with blackish. I m mat it re. — Lower parts streaked with 

 dusky. In Peale's Falcon, the top of the head is dark slaty, uniform 

 with back; chest, heavily spotted with blackish. 



