REFERENCES 
59 
When possible, the age of first comers from the North should be recorded ; 
but the plumage of adult and young are now often alike, and a bird’s age 
can be ascertained with exactness only by dissection, the condition of the 
bones of the cranium furnishing one of the most dependable clues. 
References 
1836 . Bachman, J., On the Migration of the Birds of North America, 
Sillim. Am. Journ. Sci., XXX, pp. 81-100. Reprinted in The Warbler II, 
1907, 24. — 1866. Baird, S. F., The Distribution and Migration of North 
American Birds, Am. Journ. Sci., XLI, pp. 78-90; 184-192, 339-347. — 1880 
Allen, J. A., Destruction of Birds by Lighthouses, Bull. Nutt. Orn. Club, V, 
pp, 131-138. — 1880. Allen, J. A., Origin of the Instinct of Migration in 
Birds, Ibid, 151-154. — 1881. Allen, J. A., The Migration of Birds. Scrib- 
ner’s Mag., XXII, pp. 932-938.— 1881. Scott, W. E. D., Some Observa- 
tions on the Nocturnal Migration of Birds, Bull. Nutt. Orn. Club, VI, pp. 
97-100. — 1884. Dutcher, W., Migration at L. I. Lighthouses, Auk, I, pp. 
174-179. — 1885. Merriam, C. H., Preliminary Rep. of the A. O. U. Comm, 
on Bird Migration, Auk, II, pp. 53-64. — 1886. Brewster, W., Bird Mi- 
gration, Mem. Nutt. Orn. Club, I, 22 pp. — 1888. Chapman, F. M., The 
Nocturnal Migration of Birds, Auk, V, pp. 37-39. — 1888. Cooke, W. W., 
Bird Migration in the Mississippi Valley, Bull. 2, Biol. Surv., 313 pp. — 1889 
Stone, W., Graphic Representation of Bird Migration, Auk, VI, pp. 139-144. 
VIII, 1891, pp. 194-108. — 1892-1894. Loomis, L. M., Observations on Mi- 
gration in South Carolina, Auk, IX, pp. 28-39; XI, 1894, 26-39, 94-117. — 
1893 . Mackay, G. H., Fly Lines, Auk, X, pp. 245-249. — 1894. Chapman, 
F. M., Remarks on the Origin of Bird Migration, Auk, XI, pp. 12-17. — • 
1894. Stone, W., Bird Migration in the Vicinity of Philadelphia, Birds E. 
Pa. and N. J., pp. 15-28. — 1895. Bray, R. S., A Remarkable Flight of Birds, 
Nature, LII, p. 45. — 1895. Jones, L., Bird Migration at Grinnell, la., 
Auk, XII, pp. 117-134; 231-244.— 1895-1900. Loomis, L. M., California 
Water Birds, Proc. Acad. Sci., 2d ser., V, pp. 177-224; VI, 1896, 1-30; 
353-366; 3d ser., 1900; 277-322; 349-363.— 1896. Allen, J. A., The Mi- 
gration of Birds, Papers Presented to the World’s Congress of Ornithology 
pp. 31-38. — 1898. Stone, W., Methods of Recording and Using Bird 
Migration Data, Proc. Acad. Nat. Sci.,Phila., pp. 128-156. — 1899. Libby, 
O. G., The Nocturnal Flight of Migratory Birds, Auk, XVI, pp. 140-146. — 
1900 . Reynaud, G., The Orientation of Birds, Bird-Lore, II, pp. 101-108; 
141-147. — 1901. Cole, L. J., Suggestions for a Method of Studying the 
Migration of Birds, 3d. Rep. Mich. Acad. Sci., pp. 67-70. — 1902. Winken- 
werder, H. A., The Migration of Birds with Special Reference to Nocturnal 
Flight, Bull. Wis. Nat. Hist. Soc., II, pp. 177-263. — 1903. Bonhote, J. L., 
Bird Migration at Some of the Bahama Lighthouses, Auk, XX, pp. 169-479. 
— 1903 . Cooke, W. W., Some New Facts about the Migration of Birds, 
Yearbook, Dept, of Agric., pp. 371-386. — 1904. Cooke, W. W., Distribu- 
tion and Migration of N. A. Warblers, Bull. 18, Biol. Surv., 142 pp. See also 
pp. 14-20, Warblers of N. A., 1904. Cooke, W. W., The Effect of Altitude 
on Bird Migration, Auk, XXI, pp. 338-341. — 1904. Taverner, P. A., A 
Discussion of the Origin of Migration, Auk, XXI, pp. 322-333. — 1905. 
Allen, J. A. (Review), Auk, XXII, pp. 325-328. — 1905. Bishop, L. B., 
The Direction of Flight in the Fall Migration at New Haven, Conn., Auk, 
XXII, pp. 372-377. — 1905. Cooke, W. W., Routes of Bird Migration, 
Auk, XXII, pp. 1-11. — 1906. Carpenter, F. W., An Astronomical Determi- 
nation of the Heights of Birds During Nocturnal Migration, Auk, XXIII, 
pp. 210-217. — 1906. Cooke, W. W., Distribution and Migration of N. A. 
Ducks, Geese, and Swans, Bull. 26, Biol. Surv., 90 pp/ — 1906. Stebbins, 
J., A Method of Determining the Heights of Migrating Birds, Pop. Astron- 
omy, XIV, pp. 65-70. — 1906. Stone, W., Some Light on Night Migration, 
Auk, XXIII, pp.. 249-252. Exceptionally interesting. — 1908. Cooke, W. W., 
Bird Migration in the District of Columbia, Proc. Biol. Soc., XXI, pp. 107- 
