230 U.S. NATIONAL MUSEUM BULLETIN 23 3 



Fitch, Frank W. 



1950. Life history and ecology of the scissor-tailed flycatcher, Muscivora 

 forficata. Auk, vol. 67, pp. 145-168. 

 Fletcher, Laurence B. 



1925. A cowbird's maternal instinct. Bull. Northeastern Bird-Banding 

 Assoc, vol. 1, pp. 22-24. 

 Flint, H. W. 



1892. Eggs of warblers in the collection of H. W. Flint. Ornithologist and 

 Oologist, vol. 17, p. 138. 

 FoRBusH, Edward Howe 



1927. Birds of Massachusetts and other New England states. Vol. 2, pp. 

 461. 

 Fox, Glen A. 



1961. A contribution to the life history of the clay-colored sparrow. Auk. 

 vol. 78, pp. 220-224. 

 Friedmann, Herbert 



1925. Notes on the birds observed in the lower Rio Grande valley of Texas 



during May, 1924. Auk, vol. 42, pp. 537-554. 

 1929. The cowbirds: A study in the biology of social parasitism. Pp. 421. 

 1931. Additions to the list of birds known to be parasitized by the cowbirds. 



Auk, vol. 48, pp. 52-65. 

 1933. Further notes on the birds parasitized by the red-eyed cowbird. 



Condor, vol. 35, pp. 189-191. 

 1934a. Further additions to the list of birds victimized by the cowbird. 



Wilson Bull., vol. 46, pp. 25-36, 104-114. 

 1934b. Additional notes on the birds victimized by the shiny cowbird 



(Molothrus bonariensis) . Ibis, ser. 13, vol. 4, pp. 340-347. 

 1938. Additional hosts of the parasitic cowbirds. Auk, vol. 55, pp. 41-50. 

 1943. Further additions to the list of birds known to be parasitized by the 



cowbirds. Auk, vol. 60, pp. 350-356. 

 1949. Additional data on victims of parasitic cowbirds. Auk, vol. 66, 

 pp. 154-163. 

 Friedmann, Herbert, and Smith, Foster D., Jr. 



1955. A further contribution to the ornithology of northeastern Venezuela. 

 Proc. U.S. Nat. Mus., vol. 104, pp. 463-524. 

 Gabrielson, Ira N., and Jewett, Stanley G. 



1940. The birds of Oregon. Pp. 650. 

 GiBB, John A. 



1961. Bird populations. In Biology and comparative physiology of birds, 

 edit. A. J. Marshall, vol. 2, chapt. 24, pp. 413-446. 

 Giddings, H. J. 



1897. Notes on the warblers of Jackson Co. Iowa Ornithologist, vol. 3, 

 pp. 7-9. 

 GiLLiARD, E. Thomas 



1959. Note on some birds of northern Venezuela. Amer. Mus. Novitates, 

 no. 1927, pp. 33. 

 Oilman, Marshall French 



1907. Some birds of southwest Colorado. Condor, vol. 9, pp. 152-158. 



1914. Breeding of the bronzed cowbird in Arizona. Condor, vol. 16, pp. 



255-259. 



1915. A forty acre bird census at Sacaton, Arizona. Condor, vol. 17, pp. 



86-90. 



