BIRDS OF NORTH AND MIDDLE AMERICA 251 



tarsi).— Howell, Pacific Coast Avif., No. 12, 1917, 54, 106, 109 (Santa Bar- 

 bara Islands, breeding). — Shelton, Univ. Oregon Bull., new ser., xiv. No. 4, 



1917, 20, 27 (wc. Oregon; abund. res.). — Bailet, Iowa Geol. Surv. Bull. 6, 



1918, 110 (monogr. ; Iowa). — Harris, Trans. Acad. Sci. St. Louis, xxiii, 1919, 

 262 (near Kansas City, Mo., Nov. 7, 1913). — Swann, Synopt. List Accip., 

 pt. 2, 1919, 47, part; Synop. Accip., ed. 2, 1922, 77, part; Monogr. Birds 

 Prey, i, 1926, 392, part (monogr.). — Burleigh, Auk, xxxviii, 1921, 554 

 ( Warland, Mont. ; common summer res.) ; xl, 1923, 656 (Clarks Forks, Idaho) ; 

 xlvi, 1929, 511 (Kirkland, Wash.). — Wetmore, Condor, xxiii, 1921, 60, in 

 text (near Williams, Ariz.). — Gabrielson, Condor, xxiv, 1922, 33, in text 

 (Harney Valley, Oreg.) ; Auk, xH, 1924, 556 (status, Wallowa County, Oreg.) ; 

 Condor, xxxiii, 1931, 113 (common; Rogue River Valley, Oreg.); Auk, Ixi, 

 1944, 120 (Alaska; single birds along Kasilof River and n. shore of Tustamina 

 Lake, 2 in Mount McKinley Park and Fairbanks, 4 along Steese Highway, 

 1 on Yukon at Circle). — Dawson, Birds California, stud, ed., iii, 1923, 1674 

 (genl.; California). — Townsend, Bull. Amer. Mus. Nat. Hist., xlviii, 1923, 

 14 (Miraflores, Lower California; spec). — Wood, Univ. Michigan Mus. 

 Zool. Misc. Publ. 10, 1923, 38 (Mouse River, Turtle Mountain, and around 

 Devils and Sweetwater Lakes, N. Dak.). — de Laubenfels, Wils. Bull., 

 xxxvi, 1924, 169 (Brownsville, Tex.). — Grinnell and Storer, Animal Life 

 Yosemite, 1924, 287 (descr. ; distr.; habits; Yosemite). — Hanna, Condor, 

 xxvi, 1924, 148, in text (egg weight). — Nice and Nice, Birds Oklahoma, 



1924, 42 (genl.; Oklahoma). — Richards, Condor, xxvi, 1924, 100 (Grass 

 Valley district, Cahf.). — Van Denburgh, Condor, xxvi, 1924, 69 (Todos 

 Santos Islands).— Anthony, Proc. California Acad. Sci., ser. 4, xiv. No. 13, 



1925, 295 (Guadalupe Island, Mexico). — Gardner, Proc. U. S. Nat. Mus., 

 Ixvii, art. 19, 1925, pi. 6 (structure of tongue). — Gloyd, Wils. Bull., xxxvii, 



1925, 142 (econ. status; Kansas). — Griscom and Crosby, Auk, xlii, 1925, 

 535 (status; Brownsville, Tex.). — Lincoln, Auk, xlii, 1925, 60 (near Devils 

 Lake, N. Dak.). — Simmons, Birds Austin Region, 1925, 102 (Austin region, 

 Tex.; habits; nests and eggs; descr., etc.). — Wyman, Condor, xxvii, 1925, 78, 

 in text (catching pigeons). — Wyman and Burnell, Field Book Birds South- 

 western United States, 1925, 102 (descr.; chars.). — Bruner, Condor, xxviii, 



1926, 232 (Baboquivari Mountains, Ariz.).— Kelso, Ibis, 1926, 703 (Arrow 

 Lakes, British Columbia; not common breeder). — McLellan, Proc. CaU- 

 fornia Acad. Sci., ser. 4, xv, 1926, 297 (Guadalupe Island, Mexico). — Racey, 

 Auk, xliii, 1926, 322 (Sproat Mountain, Alpha Lake; Alpha Lake region. 

 Brit. Columbia); Murrelet, xi, 1930, 70, in text (Alberta; Grand Prairie; 

 rec). — Taverner, Birds Western Canada, 1926, 193, in text (crit.) ; Vic- 

 toria Mem. Mus. Bull. 48, 1927, 3, pis. 1-3 (crit.; plumages, fig.); Nat. Mus, 

 Canada Bull. 50, 1928, 92 (near Belvedere, Alberta; prob. migr.); Birds 

 Canada, 1934, 126, in text (Canada) ; Condor, xxxviii, 1936, 66, 67, 68, 69, 

 70, 71, in text (color; range; feathers; hybridizes; meas. crit.). — Williams, 

 Wils. Bull., xxxviii, 1926, 31 (status; Red River Valley, N. Dak.).— Lamb, 

 Condor, xxix, 1927, 70 (Natividad Island).— Lang, Auk, xliv, 1927, 249 

 (Arkansas). — Linsdale and Hall, Wils. Bull., xxxix, 1927, 96 (Douglas 

 County, Kans.). — Mailliard, Proc. California Acad. Sci., ser. 4, xvi, 1927, 

 297 (Modoc County, Calif.).— Tanner, Condor, xxix, 1927, 198 (Virgin 

 River Valley, Utah). — Allen, Condor, xxx, 1928, 362, in text (Gold Lake 

 region, n. Sierra Nevada). — DeGroot, Condor, xxx, 1928, 361, in text 

 (eggs). — Larson, Wils. Bull., xl, 1928, 47 (e. McKenzie County, N. Dak.). — 

 Palmer, Condor, xxx, 1928, 272, in text.— Pemberton, Condor, xxx, 1928, 

 147 (Santa Rosa Island) ; xxxiii, 1931, 218 (Channel Islands of s. California). — 



