LITERATURE CITED 491 



VEOOMAN, AI3EBT GEOBGE. 



1901, Discovery of the egg of the black swift {Cypseloides niger Mrealis). 



Auk, vol. 18, pp. 394r-395. 

 Waeren, Benjamin Haeey. 



1890. Report on the birds of Pennsylvania. Ed. 2. 

 Wabeen, Edv^aed Royal. 



1916. Notes on the birds of the Elk Mountain region, Gunnison County, 

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 Watson, She^pakd Abthub. 



1933. The Vaux swift at WMttier, California. Condor, vol. 35, pp. 203-204. 

 Wayne, Abthub Teezkvant. 



1910. Birds of South Carolina. 

 Wells, John Gbant. 



1902. Birds of the island of Carriacou. Auk, vol. 19, pp. 343-349. 

 Weltee, Wilfeed August. 



1935. Nesting habits of ruby-throated hummingbird. Auk, vol. 52, pp. 

 88-89. 

 Westovee, Myeon F. 



1932. The flight of swifts. Bird-Lore, vol. 34, pp. 253-254. 

 Wetmoee, Alexandeb. 



1916. Birds of Porto Rico. U. S. Dept. Agr. Bull. 326. 



1920. Observations on the habits of birds at Lake Burford, New Mexico. 



Auk, vol. 37, pp. 393-412. 



1921. Further notes on birds observed near Williams, Arizona. Condor, 



vol. 23, pp. 60-64. 

 1927. The birds of Porto Rico and the Virgin Islands. New York Acad. Sci., 



vol. 9, pt. 4, pp. 409-571. 

 1932. Seeking the smallest feathered creatures. Nat. Geogr. Mag., vol. 



62, pp. 65-89. 

 1935. The thick-billed parrot in southern Arizona. Condor, vol. 37, pp. 



18-21. 

 Weydemeyeb, Winton. 



1927. Notes on the location and construction of the nest of the calliope 



hummingbird. Condor, vol. 29, pp. 19-24. 

 Wheelei{, Haery Edgab. 



1922. Random notes from Arkansas. Wilson Bull., vol. 34, pp. 221-224. 

 Wheelock, Ibene Gbos\'enoe. 



1904. Birds of California. 



1905. Regurgitative feeding of nestlings. Auk, vol. 22, pp. 54-70. 

 Whittle, Chables Livy. 



1937. A study of hummingbird behavior during a nesting season. Bird- 



Banding, vol. 8, pp. 170-173. 

 WiDMANN, Otto. 



1907. A preliminary catalog of the birds of Missouri, 



WlLLABD, FeANCIS COTTLE. 



1899. Notes on Eugenes fulgens. Osprey, vol. 3, pp. 65-66. 



1911. The blue-throated hummingbird. Condor, vol. 13, pp. 46-49. 

 Wn-soN, Alexandeb. 



1828-1832. American ornithology. Vols. 1, 2. 

 Woodbury, Angus M. 



1938. Red-naped sapsucker and rufous hummingbird. Condor, vol. 40, 



p. 125. 



