154 BULLETIN 50, UNITED STATES NATIONAL MUSEUM 



340, part; ed. 2, 1882, No. 496; Birds Northwest, 1874, 338; Key North 

 Amer. Birds, ed. 2, 1884, 530.— Schlegel, Mus. Pays-Bas, ii, No. 36, livr. 10, 

 1873, 61 (crit.). — Snow, Birds Kansas, 1873, 1 (Lawrence). — Hatch, Bull. 

 Minnesota Acad. Nat. Sci., 1874, 51 (Minnesota; winter; common). — 

 Shaupe, Cat. Birds Brit. Mus., i, 1874, 97 (Brit. Cohimbia, w. side Rocky 

 Mountains; Repulse Bay, Keewatin) ; Hand-list, i, 1899, 249. — Bendirb, 

 Proc. Boston Soc. Nat. Hist., xvii, 1875, 163 (Camp Harney, Oreg.; nest and 

 young). — Boies, Cat. Birds Southern Michigan, 1875, No. 132 (s. Michigan; 

 summer).— GiBBs, U. S. Geol. and Geogr. Surv. Terr., Bull. 5, No. 3, 1879, 

 490 (Michigan; irreg.).— Dalgleish, Bull. Nuttall Orn. Club, v, 1880, 141 

 (3 British records). — Drew, Bull. Nuttall Orn. Club, vi, 1881, 141 (San Juan 

 County, Colo., breeding).— Merriam, Bull. Nuttall Orn. Club, vi, 1881, 233 

 (Lewis County, N. Y., breeding). — Wheaton, Rep. Birds Ohio, 1882, 422, 

 579 (Ohio; descr.; syn.; rare in winter).— Hartlaub, Journ. fiir Orn., xxxi, 



1883, 264 (Chilcat and Chilcoot, Alaska). — Gurnet, List Diurn. Birds Prey, 



1884, 28; Cat. Birds Prey, 1894, 20.— McLenegan, Cruise Corwinin 1884, 1889, 

 118 (Kowak River, nw. Alaska.).— Reid, U. S. Nat. Mus. Bull. 25, 1884, 218 

 (Bermuda, 2 specs.). — Turner, Proc. U. S. Nat. Mus., viii, 1885, 244 (Fort 

 Chimo, Ungava, res.). — Salvin and Godman, Biol. Centr. Amer., Aves, iii, 

 1899, 45 (Yecaera, Sonora; Sierra de Nayarit, 8,000 feet, Tepic).— American 

 Ornithologists' Union, Auk, xxv, 1908, 369. — Stone, Birds New Jersey, 



1908, 1G2 (New Jersey; descr.; rare winter vis.); Auk, xliv, 1927, 102. in text 

 (flight, Atlantic coast U. S.).— Cory, Publ. Field Mus. Nat. Hist., No. 131, 



1909, 458 (Illinois and Wisconsin). — Dawson and Bowles, Birds Washing- 

 ton, ii, 1909, 501 (Washington; habits; descr.). — Saunders, Auk, xxviii, 



1911, 36 (Gallatin County, Mont., resident). — Sclater, Hist. Birds Colorado, 



1912, 173 (Colorado; uncommon winter vis.). — Reichenow, Die Vogel, i, 



1913, 375. — British Ornithologists' Union, List Brit. Birds, ed. 2, 1915, 

 336 (3 British rec). — Hennniger, Wils. Bull., xxx, 1918, 19 (near New 

 Bremen, Shelley County, Ohio, Nov. 8, 1917).— Swann, Synopt. List Accip., 

 pt. 1, 1919, 20.— Griscom, Birds New York City Region, 1923, 185 (status, 

 New York City region).— Farley, Auk, xli, 1924, 178, in text (nesting; 

 Petersham, Mass.). — Swarth, Condor, xxvi, 1924, 185 (San Francisco 

 Mountains, Ariz.); Pacific Coast Avif., No. 22, 1934, 24 (Sitkalidak, Alaska; 

 1 record).— Taverner, Birds Western Canada, 1926, 189, pi. 25 B (fig., 

 descr.; habits; w. Canada); Nat. Mus. Canada Bull. 50, 1928, 92 (near 

 Belvedere, Alberta); Birds Canada, 1934, 120 (Canada; col. fig. (pi. 12) 

 (descr.); Can. Water Birds, 1939, 130 (Canada; descr.); Condor, xlii, 1940, 

 157, in text (distr.).— Sutton, Auk, xliv, 1927, 563, in text (nesting. Clarion 

 County, Pa.); Wils. Bull., xl, 1928, 84, in text (Schuylkill County, Pa., food; 

 migr.). — Abbott, Condor, xxx, 1928, 192, in text (Mesa Grande, San Diego 

 County, Calif.). — Jung, Auk, xlv, 1928, 384, in text (winter, se. Wisconsin). — 

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

 Nat. Mus. Canada Bull. 53, 1928, 106 (southern Baffin Island).— Williams, 

 Auk, xlv, 1928, 167 (Leon County, Fla.). — Laing and Taverner, Ann. 

 Rep. Nat. Mus. Canada for 1927 (1929), 76 (Chitina River, Alaska; breeds; 

 spec.).— MuNRO, Condor, xxxi, 1929, 113 (food habits).— Grinnell, Dixon, 

 and LiNSDALE, Univ. California Publ. Zool., xxxv, 1930, 185 (distr. Lassen 

 Peak region, n. California).— Bagg, Auk, xlviii, 1931, 424, in text (nesting, 

 Chester, Mass.). — Guthrie, Wils. Bull., xliv, 1932, 102, in text (eats snakes). 

 — Clabaugh, Condor, xxxv, 1933, 80, in text (California; Shasta County; 

 food). — Errington, Condor, xxxv, 1933, 24 (food habits; Wisconsin). — 

 Compton, Condor, xxxvi, 1934, 221, in text (California: Rancho La Brea; 



