SIBLEY: ORNITHOLOGY 651 



Beddard, F. E. 



1898. The Structure and Classification of Birds, xx + 548 pp. London and New Yorlt: 

 Longmans, Green and Co. 



Beebe, C. W. 



1906. The Bird, its Form and Function, xii + 496 pp. New Yorli. 

 1915. A Tetrapteryx stage in the ancestry of birds. Zoologica, 2:39-52. 

 1918-1922. A Monograph of the Pheasants. 4 vols. London: New York Zoological 

 Society. 



Beecher, W. J. 



1950. Convergent evolution in the American orioles. Wilson Bull., 62:51-86. 



1951. Adaptations for food-getting in the American blackbirds. Auk, 68:411-440. 



BOUBIER, M. 



1925. L'evolution de I'ornithologie. ii + 307 pp. Paris: Felix Alcan. 



Brehm, a. E. 



1861. Das Leben der Vogel. xx + 707 pp. Glogau. 



1864-1869. Illustrirtes Thierleben. 6 vols. Hildburghausen: Bibl. Inst. 



Bruch, C. F. 



1828. Ornithologische Beitriige. Isis von Oken, 21:718-733. 



1843. (Section fiir Zoologie, vierte Sitzung, am 23 September 1842) Deutsch. Naturf. 

 Versamml. Ber., 1843:209-210. 



BULLER, W. L. 



1872-1873. A History of the Birds of New Zealand, xxiv + 384 pp. London. 



Burt, W. H. 



1930. Adaptive modifications in the woodpeckers. Univ. Calif. Publ. Zool., 32:455-524. 



Chapix, J. P. 



1932-1939. The Birds of the Belgian Congo. 2 vols. Bull. Amer. Mus. Nat. Hist., Nos. 

 65 and 75. 



Cole, L. J. 



1902. Suggestions for a method of studying the migrations of birds. Rept. Michigan 

 Acad. Sci., 1902:67-70. 



Cooke, W. W. 



1888. Report on the Bird Migration in the Mississippi Valley in the Years 1884 and 

 1885. Bull. U. S. Bur. Biol. Surv., No. 2, 313 pp. Washington, D. C. 



Cope, E. D. 



1871. Synopsis of the extinct batrachia, reptilia and aves of North America. Trans. 



Amer. Philos. Soc, n.s., 14:1-252 + viii. Aves section, pp. 236-240. 

 1876. On a gigantic bird from the Eocene of New Mexico. Proc. Acad. Nat. Sci. Phila., 

 28:10-11. 



Cory, C. B., C. E. Hellmayr, and H. B. Conover 



1918-1949. Catalogue of Birds of the Americas. Publ. Field Mus. Nat. Hist., Vol. 13, 

 Pts. 1-11. (Publ. in 15 vols.) 



COUES, E. 



1872. Key to North American Birds, viii + 361 pp. Salem. 



Dames, W. 



1884. Ueber Archeoptet-yx. Palaeont. Abhandl., 2:117-196. 



