BIRDS—BUTEONINAE—BUTEO SWAINSONI. 
19 
List of specimens. 
Catalegue number. 
Sex and age. 
Locality. 
When collected. 
Whence and how ob¬ 
tained. 
Oiiginal number. 
Collected by— 
Point of bill to end S 
of tail. 
a 
Between tips of out- § 
>3 
stretched wings. ;j 
5575 
Au". —, 1855 
S. F. Baird. 
5990 
7599 
8632 
s 
Nov. 2, 1857 
11.50 
21.50 
6908 
690/ 
Q 
Aug. 11, 1857 
387 
w. S. Wood. 
5584 
$ 
Aug. 14, 1856 
262 
11.00 
18.15 
5845 
Q? 
544 
13.00 
23.00 
5842 
Q ? 
543 
13.00 
25.00 
5844 
09 
541 
13.50 
25.50 
8514 
Sept. 23, 1854 
94 
11.50 
21.50 
4198 
Winter 1853-54 
4512 
6867 
$ 
8513 
Dec. —, 1854 
23 
\ 
Sub-Family BUTEONINAE—T he Buzzards. 
General form heavy, flight vigorous and long continued, but not so rapid as in the preceding sub-families. Subsist mainly on 
small quadrupeds and reptiles. 
BUTEO, Cuvier. 
Buleo, Cuvier, Regne Animal I, 323, (1817.) 
Bill short, wide at base ; edges of upper mandible lobed ; nostrils large, ovate ; wings long, wide, fourth and fifth quills usually 
longest ; tail moderate, rather wide ; tarsi moderate, robust, with transverse scales before and behind, laterally with small circular 
and hexagonal scales ; toes moderate, or rather short ; claws strong. Contains about thirty species, inhabiting all countries. 
Sub-Genus Buteo. 
BUTEO SWAINSONI, Bonaparte, 
Swainson’s Buzzard. 
Buteo Swainsoni, Bonap. Comp. List, p. 3, (1838.) 
“Buteo vulgaris,” Rich & Sw. Faun. Bor. Am. Birds, p. 47. 
The obtaining ot this species is one of the most interesting results in ornithology attained by 
the surveying and exploring expeditions. Previously it was entirely unknown to American 
naturalists, who for the greater part followed the errors of European ornithologists in mistaking 
for it quite a distinct and very different bird, (Buteo montanus, Nuttall.) It possesses additional 
interest, too, in being more nearly related to a generic form of the Old World (typical Buteo ) 
than any bird hitherto discovered inhabiting the continent of America. 
All the specimens in the present collection are apparently of mature size, and the plumage is 
