=BIBLIOGRAPHY=[4] [Footnote 4: Since almost every faunal paper on birds has a bearing on the subject of migration, only a few can be listed in this publication. Those included were selected to aid the student wishing to pursue the subject further and to cover not only all cited in the text but also others consulted and used in its preparation.] (1) Allard, H. A. 1928. BIRD MIGRATION FROM THE POINT OF VIEW OF LIGHT AND LENGTH OF DAY CHANGES. Amer. Nat. 62: 385-408. (2) Austin, O. L., Jr. 1928. MIGRATION-ROUTES OF THE ARCTIC TERN (STERNA PARADISAEA BRUNNICH). Northeastern Bird Banding Assoc. Bull. 4: 121-125. (3) Baird, S. F. 1866. THE DISTRIBUTION AND MIGRATIONS OF NORTH AMERICAN BIRDS. Amer. Jour. Sci. (2) 41: 78-90, 184-192, 337-347. (4) Clarke, W. E. 1912. STUDIES IN BIRD MIGRATION. 2 V., illus. London. (5) Cooke, W. W. 1888. REPORT ON BIRD MIGRATION IN THE MISSISSIPPI VALLEY IN THE YEARS 1884 AND 1885. U. S. Dept. Agr., Div. Econ. Ornith. Bull. 2, 313 pp., illus. (6) ------------ 1904. DISTRIBUTION AND MIGRATION OF NORTH AMERICAN WARBLERS. U. S. Dept. Agr., Div. Biol. Survey Bull. 18, 142 pp. (7) ------------ 1904. THE EFFECT OF ALTITUDE ON BIRD MIGRATION. Auk 21: 338-341 (8) ------------ 1905. ROUTES OF BIRD MIGRATION. Auk 22: 1-11. (9) ------------ 1905. THE WINTER RANGES OF THE WARBLERS (MNIOTILTIDAE). Auk 22: 296-299. (10) ------------ 1906. DISTRIBUTION AND MIGRATION OF NORTH AMERICAN DUCKS, GEESE, AND SWANS. U. S. Dept. Agr., Bur. Biol. Survey Bull. 26, 90 pp. (11) ------------ 1908. AVERAGING MIGRATION DATES. Auk 25: 485-486. (12) ------------ 1910. DISTRIBUTION AND MIGRATION OF NORTH AMERICAN SHOREBIRDS. U. S. Dept. Agr., Bur. Biol. Survey Bull. 35, 100 pp., illus. (13) ------------ 1913. DISTRIBUTION AND MIGRATION OF NORTH AMERICAN HERONS AND THEIR ALLIES. U. S. Dept. Agr., Bur. Biol. Survey Bull. 45, 70 pp., illus. (14) ------------ 1913. THE RELATION OF BIRD MIGRATION TO THE WEATHER. Auk 30: 205-221, illus. (15) ------------ 1914. DISTRIBUTION AND MIGRATION OF NORTH AMERICAN RAILS AND THEIR ALLIES. U. S. Dept. Agr. Bull. 128, 50 pp., illus. (16) ------------ 1915. BIRD MIGRATION. U. S. Dept. Agr. Bull. 185, 47 pp., illus. (17) ------------ 1915. BIRD MIGRATIONS IN THE MACKENZIE VALLEY. Auk 32: 442-459, illus. (18) ------------ 1915. DISTRIBUTION AND MIGRATION OF NORTH AMERICAN GULLS AND THEIR ALLIES. U. S. Dept. Agr. Bull. 292, 70 pp., illus. (19) Cooke, W. W. 1915. THE YELLOW-BILLED LOONI A PROBLEM TN MIGRATION. Condor 17: 213 214. (20) Coues, E. 1878. BIRDS OF THE COLORADO VALLEY, A REPOSITORY OF SCIENTIFIC AND POPULAR INFORMATION CONCERNING NORTH AMERICAN ORNITHOLOGY. U. S. Dept. Int. Misc. Pub. 11, 807 pp., illus. (21) Gätke, H.