INTRODUCTION 
lxxxvii 
Birds in their Relation to Agriculture, Farmer’s Bulletin, No. 54, 1897; 
Crow Blackbirds and their Food, Yearbook for 1894; The Meadowlark 
and Baltimore Oriole, Yearbook for 1895; Birds that Injure Grain, Year¬ 
book for 1897; How Birds Affect the Orchard, Yearbook for 1900; The 
Food of Cuckoos, Bull. No. 9, 1898; The Food of Nestling Birds, Year¬ 
book for 1900. — Fisher, A. K. Hawks and Owls from the Standpoint 
of the Farmer, Yearbook for 1894; Two Vanishing Game Birds, Wood¬ 
cock and Wood Duck, Yearbook for 1901. — Judd, S. D. Four Common 
Birds of the Farm and Garden, Yearbook for 1895; The Blue Jay and 
its Food, Yearbook for 1896; The Food of Shrikes, Bull. No. 9, 1898; 
The Relation of Sparrows to Agriculture, Bull. No. 15, 1901. — Mer- 
riam, C. H., and Barrows, W. B. The English Sparrow in America, 
Bull. No. 1, 1889. — Palmer, T. S. A Review of Economic Ornithology 
in the United States, Yearbook for 1899. 
Migration. 
Baird, S. F. Distribution and Migration N. Am. Birds, Am. Journ. Sci. 
Arts, vol. xli., Jan. 1866.— Belding, Lyman. Land Birds of Pacific 
Coast District, Cal. Acad. Sci., San Francisco, 1890. — Brewster, Wil¬ 
liam. Bird Migration Memoirs Nutt. Orn. Club, Cambridge, Mass., 1886. 
— Chapman, F. M. Remarks on Origin of Migration, Auk, xi. 12,1894. 
— Cooke, W. W. Bird Migration in the Mississippi Valley, Div. Econ. 
Orn. Bull. No. 2, U. S. Dept. Agr. — Gatke, H. Heligoland, David Doug¬ 
las, Edinburgh, 1895. — Loomis, L. M. Water Birds of California, Proc. 
Cal. Acad. Sci., San Francisco. — Stone, Witmer. Bird Waves and 
their Graphic Representation, Auk, viii. 194, 1891 ; Graphic Representa¬ 
tion of Bird Migration, Auk, vi. 139, 1889. See, also, sections on Migra¬ 
tion in Chapman’s Bird-Life and Newton’s Dictionary of Birds. 
Moult and Protective Coloration. 
Chadbourne, A. P. Individual Dichromatism in Megascops asio , Auk, 
xiii. 321,1896 ; xiv. 33, 1897. — Clarke, H. L. Pterylography of the Ca- 
primulgidte, Auk, xviii. 167, 1901. — Dwight, Jonathan, Jr. Moult of 
Quails and Grouse, Auk, xvii. 143, 1900 ; Plumage Cycles and Relation 
between Plumages and Moults, Auk, xix. 248,1902; Sequence of Moults 
and Plumages of Laridae, Auk, xviii. 49, 1901 ; Sequences of Plumages 
and Moults of Passerine Birds, Annals New York Acad. Sci. vol. xiii. 77, 
1896. — Stone. Witmer. Moulting of Birds, Proc. Acad. Nat. Sci. 
Phila. 1896, 108; Moult and Alleged Color Change in Birds, Ibis, Apr. 
1901,177 ; Summer Moulting of Plumage of Certain Ducks, Proc. Acad. 
Nat. Sci. Phila. 1899, 467. See, also, Newton’s Dictionary, Moult, and 
Chapman’s Bird-Life, chap, iii., Colors of Birds. 
Nests and Eggs. 
Bendire, Charles E. Life Histories of North American Birds, 2 vols. 
Smith. Inst. 1892, 1895. — Davie, Oliver. Nests and Eggs of North 
American Birds, 5th ed. Landon Press, Columbus, Ohio, 1898. See, also, 
the Condor, Osprey, and Nidologist. 
Songs. 
Bicknell, E. P. A Study of the Singing of onr Birds, Auk, i. 60, 126, 
oaq Q22 1884 * ii 144, 249, 1885. — Cheney, S. P. Wood Notes Wild, 
Lee' & Shepard, Boston, 1802 .-Oi.dvs, H. W. Parallel Growth of Bird 
