536 Birds of Colorado 



09 Bekgtold, W. H. Mexican Goldfinch in Colorado. Aiik, xxvi., 

 1909, p. 79. 



09 Bergtold, W. H. Albino Robins. Auk, xxvi., 1909, pp. 196-8. 



Account of an unbroken series observed in or near the City 

 Park, Denver, during four succeeding seasons. 



10 Bergtold, W. H. Bam Owl in Colorado. Auk, xxvu., 1910, 



p. 207. 

 77 Berthoud, E. L. Melopelia leiicoptera in Colorado. Bull. Nat. 



Om. Club, n., 1877, p. 83. 

 10 Betts, N. de W. Notes from Boulder Coimty, Colorado. Auk, 



xxvii., 1910, pp. 218-219. 

 25 Bonaparte, C. L. American Ornithology. 4 vols., Philadelphia, 



1825, 4to. Original description of Sayornis saya from what is 



now the State of Colorado. 



87 Brenninger, G. F. Lincoln's Sparrow and its Nesting. Om. 



and Ool., xii., 1887, p. 191. 



88 Brenninger, G. F. Nesting of the Western Yellow-Warbler 



and the Green-tailed Towhee. Om. and Ool., xiu, 1888, pp. 



64, 90. 

 94 Brenninger, G. F. American and Mexican Crossbills. Nidol., 



I., 1894, pp 99-101, with photograph. 

 74 Brewer, T. M. Note on the Nesting and Eggs of Lagopus leucurus. 



Proc. Bost. Soc. Nat. Hist., xvi., 1874, p. 348. Nest and 



eggs procured by Trippe. 



77 Brewer, T. M. Letter on the Eggs and Nest of Dendroica audu- 



boni. Ibis, 4th ser., 1877, p. 394. First description of the 

 eggs of D. audvhoni, taken by Edwin Carter, near Breckenridge, 

 in Svtmmit co. 



78 Brewer, T. M. Notes on Junco caniceps and the closely allied 



Forms. Bull. Nutt. Om. Club, iii., 1878, pp. 72-75. Nest and 

 eggs taken by J. H. Batty. 



79 Brewer, T. M. The Rocky Mountain Golden-eye {Bucephala 



islandica). Bull. Nutt. Om. Club, iv., 1879, pp. 148-152. Nest 

 and eggs first taken by Edwin Carter in Colorado. 



79 Brewer, T. M. The Rocky Movmtain Wliiskey-Jack. Bull. 

 Nutt. Om. Club, IV., 1879, pp. 239-240. Description of nest 

 and eggs found by Edwin Carter near Breckenridge. 



83 Brewster, W. Recent Occurrence of the Flammulated Owl in 

 Colorado. Bull. Nutt. Om. Club, \Tii., 1883, p. 123. Letter 

 from Aiken in regard to occurrence near Colorado Springs. 



87 Brewster, W. Three New Forms of North American Birds. 

 Auk, rv., 1887, pp. 145-149. Symphemia semipalmata inornata, 

 the Western AVillet characterized ; type from Larimer co., 

 Colorado. 



