BIRDS OF NORTH AND MIDDLE AMERICA 629 



a few records). — Long, Univ. Kansas Sci. Bull., xxxvi, 1935, 231 (w. Kansas, 

 November) ; Trans. Kansas Acad. Sci., xliii, 1940, 440 (formerly common res.; 

 Kansas; now uncommon except in extreme west — few taken in east). — 

 McCreary and Mickey, Wils. Bull., xlvii, 1935, 129, in text (se. Wyoming; 

 partial migr.). — Pierce, Condor, xxxvii, 1935, 225, in text (nest.; habits; 

 photos). — Bond, Condor, xxxviii, 1936, 72, in text (food; feeding habits), 

 120, text (molting), 169, in text (Kern County and San Luis Obispo County, 

 Calif.; food habits), 178, in text (live weights of 4 birds) ; xli, 1939, 57, in text 

 (Tule Lake region, Calif.; food habits) ; xliv, 1942, 79, in text (food habits; 

 Nevada); xlviii, 1946, 107, in text (competition with duck hawks). — Butler, 

 Auk, liii, 1936, 77, in text (Sullivan County, Ind.; spec.).— Imler, Trans. 

 Kansas Acad. Sci., xxxix, 1936, 300 (Rooks County, Kans.; occ.) ; Bird- 

 Banding, viii, 1937, 168, in text (Rooks County, Kans.; weights of 2). — 

 LiNSDALE, Pacific Coast Avif., No. 23, 1936, 23, 45 (Nevada; res.; fairly 

 common and widely distributed; records mostly in summer; nests on cliffs; 

 sev. records; specs.; weights) ; Amer. Midi. Nat., xix, 1938, 50 (Toyabe Moun- 

 tains, Nev.; nest; spec). — Marsh, Wils. Bull., xlviii, 1936, 33, in text (Sun 

 River Park, Mont.; nest.). — van Rossem, Pacific Coast Avif., No. 24, 1936, 

 21 (Charleston Mountains, Nev.; fall migr.; spec); Occ. Pap. Mus. Zool. 

 Louisiana State Univ., No. 21, 1945, 62 (Sonora; common winter vis.).— 

 Weydemeyer and Marsh, Condor, xxxviii, 1936, 194, in text (Lake Bowdoin, 

 Mont.; rare). — Alexander, Univ. Colorado Stud. Zool., xxiv, 1937, 91 

 (Boulder, Colo.; infrequent summer res.; probably present in winter also 

 [plains and mountains]; spec Univ. Colorado Mus.). — Arnold, Condor, 

 xxxix, 1937, 32, in text (Coalinga, Calif.; 3 records)— Dixon and Bond, 

 Condor, xxxix, 1937, 97, in text (Tule Lake vicinity, Calif.; 2 pairs nesting).— 

 Potter, Condor, xxxix, 1937, 43, in text (Eastend, Saskatchewan; nest.). — 

 Van Tyne and Stttton, Misc. Publ. Mus. Zool. University Michigan, No. 

 37, 1937, 24 (Brewster County, Tex.; 4 records; 1 spec). — Bent, U. S. Nat. 

 Mus. Bull. 170, 1938, 18 (life hist.). — Compton, Univ. California Publ. Zool., 

 xlii, 1938, 176, 180, in text, 185, 193 (pterylosis) , 198, 200, 201, 203, 205, 206, 

 208 (plantar tendons). — Bellrose, Auk, Ivi, 1939, 75, in text (Logan County, 

 111.; spec. 1937, third record). — Niedrach and Rockwell, Birds Denver and 

 Mountain Parks, 1939, 57 (summer res.; winter res.; distr.). — Sutton and 

 Burleigh, Occ. Pap. Mus. Zool. Louisiana State Univ., No. 3, 1939, 27 (ne. 

 Mexico: Nuevo Le6n, Arroyo de Pesquerias; 1 record). — Aldrich, Condor, 

 xlii, 1940, 90, in text (Crater Lake, Oreg.; 1 record). — Engels, Auk, Iviii, 



1941, 63, 65, in text (skeleton ratios). — Hand, Condor, xliii, 1941, 225 (St. 

 Joe National Forest, Idaho).— Jones, Wils. Bull., liii, 1941, 123 (Oberlin 

 Ohio; record [captured spec]). — Parmenter, Condor, xliii, 1941, 157, in text 

 (breeding habits). — Stabler, Auk, Iviii, Oct. 1941, 560 (used in parasite 

 experiment). — DeMay, Condor, xliv, 1942,229 (bones, Buena Vista Lake, 

 Calif.).— Marshall and Leatham, Auk, lix, 1942, 38, in text, 39, in text, 

 41, 43, in text (Great Salt Lake islands). — Stevenson, Condor, xliv, 1942, 

 110 (central Panhandle of Texas). — Sutton and Phillips, Condor, xliv, 



1942, 59 (Papago Reservation, Ariz.). — Allan and Sime, Wils. Bull., Iv, 



1943, 35 (Texas Panhandle; uncommon; principally winter). — Behle, Bull. 

 Univ. Utah, xxxiv. No. 2, 1943, 24, 36 (sw. Utah: Pine Valley Mountain 

 region, Washington County^; Condor, xlvi, 1944, 71 (Utah). — Dixon, 

 Condor, xlv, 1943, 207 (Kings Canyon National Park, Calif.). — Larrison, 

 Murrelet, xxiv, 1943, 43 (Northrup Canyon, Wash.). — Behle, Condor, xlvi, 



1944, 71 (Utah; fairly common summer res.). — Grinnell and Miller 

 Pacific Coast Avif., No. 27, 1944, 108 (California; res.).— Hill, Auk, Ixi 



