Migration of Birds Circular 16

Migration of Birds Circular 16 by Frederick C Lincoln. Published by United States Department of the Interior, Washington, DC, 1950. 1st Edition. Paperback. Size 8vo (up to 9-1/2'' tall). Condition: Nr Fine. 102 Pgs. The mysterys and advantages of migration. Origins of migration. When, how, where birds migrate. Routes of migration. Evolution of migration routs. Perils of migration. Influence of the weather on migration. Problems of migration. Illustrated wy Bob Hines. Description text copyright 2017 BooksForComfort. Item ID 32150.