BIRDS—BUTEONINAE—BUTEO SWAINSONI. I, 
List of specimens. 
Measurements. 
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3 5 3 Se 
g a" Locality. When collected.) Whence and how ob- = Collected by— = o $ 
5 a tained. s 2 Bs 
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s = as 
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s 8 ie 2 23 
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| a. a 
| Saranac lake, N. V..ccccsccsesecsevcs Aug. —, 1855 |S. F. Baird... ccccscer|svceccee|crccccvvcvccccevesccsess|eveevces|sccceees 
«| Orange, N. Jd. ..coccocssesieeces esieses MOC tey — SOB) | MDESOOO PEL ssc os cexicrecealleaasicncs|s nsaiswesicen siceanieanseen| eceesen lceeaeaen 
Washington, D. C.... cee cceccecccecs | W. Hutton ...cccceeeesleeeeeeee| ieee eens eeeeeeee tees eeee|tteteeee|teeeenee 
Cape Florida, Fla......sseeceeseceees | . . | G. Wiirdemann.....e...Jeeeeeees 11.50 21.50 
| Nelson river, H. B...... Donald Gunn .ccccccnccloccs cecs|occcvansecuscecuvenseucs|cvcvearsleccacesa 
Selkirk Settlement .......0.ccccccscec|sccncscccccosecelesvess GO... .. ceccccccce|cocccces| socccc cece ccccvccscceecs| saceseeelecssvece 
| Black Hills, Neb........ Lieut. Bryan. ......ss00 SOT | RV ee WOO ciate s nacolpimies wlemiceieiaen|aissien else 
Bridger’s Pass, Neb ....+.++.eeeeeee0-| Aug. 14, 1856 |...... AO. veces -ccsecccan 262 11.00 18.15 
Fort Steilacoom, W. T....e..00 ceeees ge Dr. Suckley.. cece sees ve 544 13,00 23,00 
eeeceees Osiaieisie ey uajela) ciniaisisiolsistesis cece cdOscncevee tess cene 543 13.00 25.00 
sinigeeus CO vires ascii saves. ae sae Bale sie Oduierrsieiaaclsineseise 54 13.50 25.50 
Shoalwater bay, W. T......- -| Sept. 23, 1854 | Gov. Stevens 94 | Dr. Cooper.. «| 11,50 21.50 
San Francisco, Cal.........6 iP Winter 1853-54 | Re Di Cutts. <cccwesise 00 vcisniee aellciessiesjeeescaissidaicjnecesiel|ciscajomen 
Seleuive AOcevercinvissiate'eie'6u'sicceare lEwetictekisescctece| (LAGUts VVLIUAINSON acces |sscsieces || Es 0s: Se INCWDEITY vicces| saice/ecien| aacisisisia 
| Tejon valley ..ccccncccecvisccccesenses |cicceiseeciccececce| sscces GOs iresaresiencevees|siececieises Dr. Heermann, .oee...eleeeesccs|sceccers 
Camp Yuma, Cal.....cesccceessee veee| Dec. —, 1854 | Major Emory.......e00- OS) 1 A. Schottscesecisasseans|escecaceleesiec cea 
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 
smal] quadrupeds and reptiles. 
a 
BUTEO, Cuvier. 
Buteo, 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, Bonar. Comp. List, p. 3, (1838.) 
“* Buteo vulgaris,’’ Ric & Sw. Faun. Bor. Am. Birds, p. 47. 
The obtaining of 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 
