582 ORNITIJOLOGY. 



IlumVxildt \'alley, wliere it was common in September along the streams 



flowing from the Ckner ^lonntains. The specimen obtained had been 



chasing' a small bird throngh a very dense thicket, bnt losing sight of the 



fugitive, alighted upon a twig Avithin a few feet of lis. 



List of specimens. 



917, 9 JKi:; lT|.pcr IlnniboUlt Valley (Camp 24), September 10, 1808. 13i— 

 l.>.|^_i(?) — (jj. Bill, black, ;;Towingr gradually pale bluish basally ; cere and angle of the 

 mouth, yellowish-green ; iris, sulphur yellow ; tarsi and toes, rich lemonyellow; claws, 

 jet-black. 



BUTEO LINEATUS. 



Kcd-sliouldci'(><l Hawk. 



/?. clegans — Red-breasted Hawk 



Bnteo elcgan.1, clssiN, Pr. Ac. Nat. Sci. Philad., 18.35, 281 ; Baird's B. X. Am., 

 1858, 28.— Baikd, Oat. X. Am. B., 1859, No. 2.5.— Cooper, Oru. Cal., 1, 1870, 

 477. 



Buteo Uncatiis var. clegans, Eidgway, in Coues' Check List, 1873, No. 3u2a ; in 

 B. B. & 11., ni.st. N. Am. B., Ill, 1874, 277. 



Bittco Uncatus, CouES, Key, 1872, 2I(J (part). 



' This handsome Hawk was seen only in the Sacramento Valley, where 

 it was rather common among the trees near the river. 



BCTTEO BOREALIS/ 

 Rcd-tnil4><l Hawk. 



/?. calunis — Dusliy lied-tail. 



Buteo calunis, Cassin, Pr. Ac. Nat. Sci. Philad., 1855, 281 ; Baird's Birds N. Am., 

 1858, 22.— Bated, Cat. N. Am. B., 1859, No. 20.— Coopek, Orn. Cal., I, 1870, 

 471. 



Buteo borcalis vnr. calitrw'i, IviDGWAY, in Coues' Check List, 1873, No. 351a; in 

 B. B. & It., Hi.st. N. Am. B., Ill, 1874, 230.— Hensiiaw, 1875, 423. 



Buteo borealis. b. calurus, Coues, B. N.W., 1874, 352. 



Buteo montanm, Cassin, Pr. Ac. Nat. Sci. Philad., 1850,39; Baird's B. N. Am., 



1858, 20 (not of Nuttall, 1S4.0,=B. swain.wnij. — Baikd, Cat. N. Am. B., 



1859, No. 24.— Coopek, Orn. Cal., I, 1870, 409. 



The Red-tailed Ilawk was a very common species in all wooded local- 

 ities of the Interior. It was especially abundant during the winter among 



' Other western races of this Hawk are ;-. hicasanus, Ridgw., of Capo St. Lucas, 

 and '5. hrideri, IIooPES, of the Great Plains, frou) Minnesota to Texas. B. harliuii, 

 AuD., and B. coopcri, Cas.s., are allied but apparently distinct species. 



