FALC;)>^ID.K — TIIK FALCOX!^. 3Q] 



head and nock, cdfrod laterally willi liijht niloiis; sccoiidaiit's passiuj: limadly into pale 

 ashy at, ends; priniaiiis slaly-lirown, with oli.snno darker hands; iii) appearanee of llu'se, 

 liowever, cm secondaries; rnnip tiUirely blackisli-lmiwii ; upper tail-ciivcrls wholly white. 

 Tail hoary slate, liasal third (or more) white, the jnmtion of the two colors irrefjidar and 

 broken; tip obscurely paler ; fcalhers obsenrely blackish alonjr edges, and with obsoh'te 

 transverse si)o(s of the same; while previiilin;,' on inner webs. Beneath ontirelv pin>" 

 while, scarcely varicfrated ; tibia- and tarsi willi a lew scattered small transverse spots of 

 blackish ; Hanks with lari;pr, more cordate spots of the .same. (Breeils in this plinna^'c.) 



IIai!. Western North America from California to the Missouri, and from the Sas- 

 katchewan to Te.\.is. 



Localities: Texas (Fort Stockton), (Dukssku, Ibis, IStio, 31;.'.); Western Arizona (Couks. 

 I'r. A. N. S., IWiti, 10). 



I,I.«T OK SPFX'IMKN'S EX,\MIXKn. 



Nat. Mns., 10; Philad. Acad., 2; Boston Soc, 2; Coll. H. llidgway, 2. Total, 1(5. 



^f(^<^KHl•ei)lenls. 



SfT. Wing. Jhil. 



$ 15.90- IT.tUi !).5()- 10.50 



9 17.(H)- 17.00 10.50-11.00 



Culmen, 

 1.00- 1.18 



1.08- 1.20 



Titrsus. Middle Tor. | Spfcimenii. 



3.10-3.45 



3.20 - 3.40 



1.-10-1.5I* (i 



1.(50-1.05 



Tlic Viiviatioii.s in this .s]K'('ie.s are very .sliglii, and never .sullicient to nii.s- 

 lead tlie student. One s].ecimen (20,r)0(», <J ; Fort Tejon, Oal. ; J. Xantu.s) 

 did'ers from tlie adults described in liaving tlie alxlonien ((iiite clo.sely barred, 

 the streaks on tii(( breast distinct, tlie rufous above linginjf the secondtiry 

 coverts, and s])readin<i; o\er the upper tail-coverts, while the tibite iind tarsi 

 are of a very deep ferruoinous, — the liars black. 



In a specimen from 'he Platte ('),'^77, i ; W. S. Wood) white iirevails on 

 the tibiiv, the bars beinjj; dark fewuginous ujion a white ground ; the ilanks 

 are similarly marked, the other lower parts, however, immaculate ; there is 

 much conceided white on the scapulars. The rufous tinge of tlie tail is very 

 deep, wiiile there is a transverse series of black blotches, indicating the 

 course of a transverse band near the end. 



H.vniTS. The California Stpiirrel Hawk a]ipcars to be an exclusively 

 western species, occurring as far to the east as Nebraska and Kansas, and as 

 far to tlie north as the Plains of the Saskiitchewan and Washington Terri- 

 tory. It occurs as far to the southeast as Texas, and has been found also 

 in New Mexico and in Arizona. 



This species was first noticed and described in a paper on the natural his- 

 tory of California imbli.slied in the Transactions of the lloyal Academy of Ber- 

 lin, in I808, by Professor Lichtenstein, a Prus.sian naturalist. It was fir.st 

 brought to the notice of American naturalists by ^Ir. Kdward ^M. Kern, of 

 Philadelphia, who accompanied Colonel Fremont in his expedition of 184G, 

 and who brought home specimens. 



Dr. Coues found it (piite alaindant alwrnt Fort W]ii]iple, where it was 

 especially numerous in the winter, and where also he tiiinks it probable that 

 it is a permanent resident. He found it more genemlly frequenting mead- 



