1921 BIBLIOGRAPHY 179 



1907. The Birds of Custer and Dawson Counties, Montana. <Auk, xxiv, pp. 241- 

 270, pis. v-xii. 2 maps; idem, pp. 389-406, pis. xv-xvi. 



1908a. The Birds of Custer and Dawson Counties, Montana. <Auk, xxv, pp. 39-56. 

 The last two form a very important local list, and include many de- 

 tailed accounts of habits, nesting, etc., of many of the species listed. 



1908b. Observations on the Golden Eagle in Montana. <Auk, xxv, pp. 251-268. 

 pis. I- IV. 



1908c. Changes of Plumage in Buteo sivainsoni. <Auk, xxv, pp. 468-471. 



1913. Notes on Swainson's Hawk ... in Montana. <Auk, xxx, pp. 167-176, pi. iv; 



and pp. 381-394, pis. xii-xiii. 



1914. The Ferruginous Rough-leg ... in Montana. <Auk, xxxi, pp. 159-167, pis. 



xiv-xviii. 



Gary, M. 



1917. Life Zone Investigations in Wyoming. =N. Amer. Fauna, 42, 95 pp., 14 pis., 

 17 figs, in text. 



Cassin, J. 



1855. Notes on North American Falconidae, with descriptions of new Species. 

 Proc. Acad. Nat. Sci. Phila., vii, pp. 277-284. 



Chapman, F. M. 



1890. A Preliminary Study of the Crackles of the Subgenus Quiscalus. <Bull. 

 Amer. Mus. Nat. Hist., iv, pp. 1-20, map. 



1904. A New Grouse from California. <Bull. Amer. Mus. Nat. Hist., xx, pp. 159-162. 

 1907. The Warblers of North America, By Frank M Chapman with the co-opera- 

 tion of other Ornithologists; pp. ix + 306, 24 col. pis., 12 lift. pis. 



Contains several Montana records not published elsewhere. 



Coale, H. K. 



1915. Present Status of the Trumpeter Swan (Olor buccinator). <Auk, xxxii, pp. 



82-90, pis. vii-x. 



Contains a number of recent records of this species, most of which are 

 not published elsewhere. 



COOKE, W. W. 



1903. The Migration of Warblers. < Bird-Lore, v, pp. 188-193, 1 col. pi. 

 1904a. Distribution and Migration of North American Warblers. =U. S. Depart- 

 ment of Agriculture. Division of Biological Survey — Bulletin No. 18, 142 p|). 

 1904b. The Migration of Warblers. <Bird-Lore, vi, pp. 21-24, 57-60, 91-92. 162-163, 

 199-200, with col. pis. 



1905. The Migration of Warblers. < Bird-Lore, vii, pp. 32-35, 135-136, 203-206, 237- 



239, 275-278, with col. pis. 

 1906a. Distribution and Migration of North American Ducks, Geese, and Swans. 



=U. S. Department of Agriculture Biological Survey — Bulletin No. 26, 90 iip. 

 1906b. The Migration of Warblers. <Bird-Lore, viii, pp. 26-27, 61-62, 100-102, 168- 



169, 203-204, with col. pis. 



1907. The Migration of Thrushes. < Bird-Lore, ix, pp. 32-34, 76-78, 121-125, with 



col. pis. 



1908. The Migration of Flycatchers. <Bird-Lore, x, pp. 114-117, 166-170, 21f)-212, 



with col. pis. 



1909a. The Migration of Flycatchers. <Bird-Lore, xi, pp. 12-14, 1 col. pi. 



1909b. The Migration of Vireos. < Bird-Lore, xi, pp. 78-82, 118-120. 165-168, col. pis. 



1909c. The Migration of North American Sparrows. < Bird-Lore, xi, pp. 254-260. 



1910a. Distribution and Migration of North American Shorebirds. ^U. S. Depart- 

 ment of Agriculture, Biological Survey — Bulletin No. 35, 100 pp., 4 pis. 



