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Feo, M. 



1910. Vogelbilder aua Transvaal. Gefiederte Welt, vol. 39, No. 19, pp. 

 145-146. 



FiLLMER, Horatio R. 



1904. [Note]. Bird Notes, vol. 8, p. 168. 



FiNSCH, Otto, and Hartlaub, Carl Johann Gustave 



1870. Die Vogel Ost-Afrikas, in Baron C. C. von der Deckeu's Reisen in 

 Ost Afrika in 1859-61, vol. 4, viii + 897 pp., 11 pis. 



Forbes, AV. A. 



1880. On two rare Ploceine birds now or lately living in the Society's 

 Menagerie. Proc. Zool. Soc. London, pp. 475-476. 



Freyberg, Baron von 



1879. Ueber das Ausstossen der Magenhaut eines karnerfressenden Vogels. 

 Zoologishe Garten (Frankfurt), vol. 20, pp. 58-59. 



Friedmann, Herbert 



1929. The cowbirds, a study in the biology of social parasitism, Springfield, 



lUinois, Charles C. Thomas, 421 pp., 28 pis., 12 text figs. 



1930. Birds collected in the Belgian Congo, in R. P. Strong, The African 



Republic of Liberia and the Belgian Congo, vol. 2, Cambridge, 



Harvard Univ. Press, pp. 749-768. 

 1937. Birds collected by the Childs Frick expedition to Ethiopia and 



Kenya Colony, II. Passeres, U.S. Nat. Mus. Bull. 153, xii + 606 



pp., 14 pis., 30 text figs. 

 1948. The parasitic cuckoos of Africa. Washington Acad. Sci. Monogr. 



No. 1, xii +204 pp., illus. 

 1950. The breeding habits of the weaverbirds. A study in the biology of 



behavior patterns. Annual Report of the Smithsonian Institution 



for 1949, pp. 293-316. 

 1955. The honey-guides. U.S. Nat. Mus. Bull. 208, 292 pp., 25 pis. 



1957. Aviculture and our knowledge of the parasitic weaverbirds. Avi- 



cultural Mag., vol. 63, pp. 158-160. 



Friedmann, Herbert, and Loveridgb, Arthur 



1937. Notes on the ornithology of tropical East Africa. Bull. Mus. Comp. 

 Zool., vol. 81, pp. 1-413. 



Gause, George Francis 



1934. The struggle for existence, Baltimore, Williams and Wilkins, 163 pp. 



Gil Lletget, Augusto 



1935. Aves del Congo Belga. I. Fam. Ploceidae. Bol. Soc. Eapafiola 



Hist. Nat., vol. 35, pp. 69-82. 



Gill, Edwin Leonard 



1945. A first guide to South African birds, Cape Town, Maskew Miller, 

 224 pp., 20 pis. 



GiLLiARD, E. Thomas 



1958. Living birds of the world, New York, Doubleday, 400 pp., 400 illus. 



GoDFRBT, Robert 



1923. Birds of Somerville. South African Journ. Nat. Hist., vol. 4, pp. 



127-138. 

 1929. The birds of Blythswood. Blythswood Rev., vol. 6, pp. 117-118. 



