1 1)4 FALCONID^E. 



with rufous on their margins ; head and nape streaked with white, 

 the latter more plainly ; lores whitish ; sides of face white, the 

 ear-coverts streaked with dark brown ; cheeks entirely brown, 

 forming a distinct facial stripe ; under surface of body white ; 

 throat with a mesial streak of dark brown, breast broadly streaked 

 with the same, the mai-kings on the flanks and thighs more oval in 

 shape and tinged with rufous ; under tail-coverts white ; under 

 wing-coverts white, with a few longitudinal spots of dark browTi ; 

 upper wing-coverts like back ; quills brown, indistinctly barred 

 with dark brown, obsolete on outer web of primaries ; inner web of 

 quills white, with dark brown bars on secondaries ; upper tail-coverts 

 spotted on both webs and tipped with white; tail light brown, crossed 

 with five or six bands of darker brown. 



As in most other Buzzards, the change from young to adult plu- 

 mage is characterized by a darker and more uniform plumage be- 

 neath. This is acquired by a direct change of feather, the brown 

 centres to the feathers widening out and occupying the greater part 

 of the feather ; and then, by the inroad of the white spots, a mottled 

 appearance is produced on the breast and a barred plumage on the 

 abdomen, where the white extends across the feathers. 



Adult female. Above brown ; the nape mottled with huffy white ; 

 the wings rather lighter than the back, the tips to the secondaries 

 whitish, but otherwise coloured as in the young ; outer upper tail- 

 coverts tipped with white ; tail brown, tipped with brownish white, 

 and crossed with two bands only of the same colour ; lores whitish ; 

 sides of face rufous brown, streaked with blackish brown ; the cheeks 

 blackish ; throat buff, streaked with blackish brown ; breast rufous 

 brown, mottled with white spots of irregular shape on both webs 

 of the feathers, taking the form of regular bars on the belly and 

 flanks, which are barred with rufous and white, the thighs more 

 narrowly and the under tail-coverts very sparingly ; under wing- 

 coverts buff, with small rufous markings; cere and gape yellow; 

 bill black, bluish at base ; feet dirty orange-yellow ; iris bright 

 amber. Total length 16 inches, culm en 1-3, wing 11-4, tail 7, 

 tarsus 2-6. 



Adult male. Similar to the female, but not quite so rufous, and 

 smaller in size. Total length 15 inches, wing 10-7, tail 6-8, tar- 

 sus 2-35. 



Hab. Eastern North America and the Antilles, ranging south 

 through the whole of Central America into Columbia and Upper 

 Amazonia. 



a. c? iuv. St. Quebec. D. W. Mitchell, Esq. [P.]. 



b. 6 ad. St. Quebec. D. W. Mitchell, Esq. tP.]. 



c. S ad. sk. Poland, Ohio. Professor Kirtland [P.]. 



d. $ ad. sk. Caracas. Mr. Dyson [C.]. 



e. d ad. sk. Chamicuros, Peruvian E. Bartlett, Esq. [C.]. 



Amazons, Jan. 1, 1868. 



f. 5 ad. sk. Chamicuros, Peruvian E. Bartlett, Esq. [C.]. 



Amazons, Dec. 30, 1867. 



g. (S juv. sk. Panama. Purchased. 



