412 



ZOOLOGY BIEDS. 



Falco comnmnis, COUES, Key N. A. Birds, 1872, 213, f. 141. Id., Am. Nat., viii, 1874, 

 598 (Eastern Montana, nesting). Id., Birds Northwest, 1874, 341. 



This hawk appears to be rather numerous in Southeastern Arizona, 

 especially about Camp Lowell, where I saw several. I have never had 

 opportunity to observe their habits ; but these are tolerably well known, and 

 probably do not differ in this region from their usual manners elsewhere. 

 I saw one in hot pursuit of a Mallard Duck one day, and the latter appeared 

 to maintain well the advantage of a dozen feet which it had, though its ulti- 

 mate fate could hardly have been doubtful had not the hawk, observing 

 me, given over its design, and retired, to be met with again a few minutes 

 later and secured. 



FALCO COLUMBAEIUS, Linn. 

 Pigeon Hawk. 



Falco columbarius, LINN., Syst. Nat., 1766, 128. 



Hypotriorchis columbarius, WOODH., Sitgreavc's Exp. Zufii & Col. Eiv., 1854, 60. 

 NEWS., P. E. E. Eep., vi, 1857, 74. HEERM., P. E. E. Rep., x, pt. iv, 1859, 

 31. HATD., Trans. Am. Phil. Soc., xii, 1862, 152. SXEV., U. S. Geol. Surv. 

 Terr., 1870, 462. SNOW, Birds Kan., 1872, 3. 



Falco columbarius, BD., U. S. & Mex. Bound. Surv., ii, pt. ii, 1859, Birds, 3. Coop. & 

 SUCKL., P. E. E, Eep., xii, pt. ii, 1860, 142. COOPER, Birds CaL, i, 1870, 

 460. ALLEN, Bui; Mus. Com p. Zool., 1872, 180 (Utah). COUES, KeyN. A. 

 Birds, 1872, 214. HENSHAW, Eep. Orn. Specs., 1873, Wheeler's Exped., 

 1874, 137. ALLEN, Proc. Bost. Soc. Nat. Hist., June, 1874, 34. COUES, 

 Birds Northwest, 1874, 345. 



Falco (Hypotriorchis) columbarius, COUES, Proc. Acad. Nat. Sci. Phila., 1866, 42. 



Falco (JEsalon) lithofalco var. colurnbarivs, BD., BREW., & EIDG., N. A. Birds, iii, 

 1874, 144. 



I am quite confident that I saw this species once or twice in Southern 

 Arizona, and at least once in New Mexico, on the upper sources of the Gila, 

 It is given by Dr. Coues, in his " Prodrome of a Work on the Ornithology 

 of Arizona Territory," as a common resident. 



