BIBLIOGRAPHY 



I. A FEW GENERAL BOOKS ON BIRDS OR DEAL- 

 ING WITH THE BIOLOGY OF BIRDS 



Beebe, C. W. The Bird. 1907. 

 Burroughs, J. Birds and Poets. 



Clarke, W. Eagle. Studies in Bird Migration, 2 Yoh. 1912. 



CouES, E. Handbook of Ornithology. 1890. 



Coward, T, A. Birds of the British Isles, 2 Yoh. 1922. 



The Migration of Birds (Cambridge Sci. Series). 1912, 



pp. 107. Also : Bird Haunts and Nature Memories. 



London, 1922, pp. 214. 

 Cunningham, J. T. Sexual Dimorphism in the Animal Kingdom. 



1900. 



Darwin, Charles. The Descent of Man, and Selection in rela- 

 tion to Sex. London, 1871. 



Doflein. Das Tier als died des Naturganzen, Vol. II. of Tierbau 

 und Tierleben, by Hesse and Doflein. 



Dresser, H.E. Birds of Europe ; Eggsof Birds of Europe^ 2 Yo\s. 

 1910. 



Evans, A. H. Birds (Vol. IX. of Cambridge Natural History). 



Gadow, H. Avcs in Bronn's Tierreich. 1891. Cf. p. 423. 

 Garstang, W. Songs of the Birds. 1922. 

 Graham Kerr. Embryology of Vertebrates. 

 Groos, K. The Play of Animals. 1900. 



Headley, F. W. Structure and Life of Birds. 1895. 

 Hilzheimer. Vogel : in Biologic der Wirbeltiere, by IIilzheimer 



and Haempel. 

 Hudson, W. H. Birds and Man. 1901. 



Kirkman, F. B. B., and others. The British Bird Book, 4 Vols. 

 1911-1913. 



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