. Reports of explorations and surveys, to ascertain the most practicable and economical route for a railroad from the Mississippi River to the Pacific Ocean . r% U,P/ M o. J^ i-i. r.^iLX-c^ SiJTveys — Calnoriiia iJeptiles ^ !Elate A. del No. 2. REPORT UPON BIRDS COLLECTED ON THE SURVEY- BY A. L. , M. D. CATHARTES CALIFORNIANUS, Shaw.—The California Vulture. Cathartes californianus, NuTTiLLs Ornithology, vol. I, p. 39. Audubon, Birds of America, Fol. pi 426—Cabsin, Gen. Rep. P. R. R. IX, 1858, californicas. Aid. Birds of America, Oct. vol. I, p. 12, pi.


. Reports of explorations and surveys, to ascertain the most practicable and economical route for a railroad from the Mississippi River to the Pacific Ocean . r% U,P/ M o. J^ i-i. r.^iLX-c^ SiJTveys — Calnoriiia iJeptiles ^ !Elate A. del No. 2. REPORT UPON BIRDS COLLECTED ON THE SURVEY- BY A. L. , M. D. CATHARTES CALIFORNIANUS, Shaw.—The California Vulture. Cathartes californianus, NuTTiLLs Ornithology, vol. I, p. 39. Audubon, Birds of America, Fol. pi 426—Cabsin, Gen. Rep. P. R. R. IX, 1858, californicas. Aid. Birds of America, Oct. vol. I, p. 12, pi. ailifornianus, Shaw, Nat. Misc., vol. IX, pi. 301. This species, the largest which our western fauna possesses, was observed occasionally duringour survey sailing majestically in wide circles at a great height and ranging by its powers offlight over an immense space of country in search of food. Whilst unsuccessfully hunting inthe Tejon valley, we have often passed several hours without a single one of this species beingin sight, but on bringing down any large game, ere the body had grown cold, these birds mightbe seen rising above the horizon and slowly sweeping towards us, intent upon their share of theprey. Nor in the


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