02276cam a22003373u 4500 65265 UtSlPG 20260610134515.0 m cr n 260607r2021||||utu|||||o|||||||||||||| d agr36000014 UtSlPG en iso639-1 QL Lincoln, Frederick Charles, 1892-1960 The Migration of North American Birds (1935) Salt Lake City, UT : Project Gutenberg, 2021 1 online resource : multiple file formats text txt rdacontent computer c rdamedia online resource cr rdacarrier U.S. Department of Agriculture circular no. 363 Release date is 2021-05-05 Tom Cosmas produced from materials made available on The Internet Archive. "The Migration of North American Birds" by Frederick Charles Lincoln is a scientific publication written in the mid-20th century. This work thoroughly examines the patterns, behaviors, and phenomena associated with the migration of birds across North America. It discusses various theories on why and how birds migrate, details about their migratory routes, and the historical context of these natural occurrences. The opening of the book sets the stage by presenting a series of thought-provoking questions regarding the seasonal disappearance and reappearance of migratory birds. It addresses the curiosity about their routes, the dangers they face during migration, and the importance of understanding these phenomena for conservation efforts. Lincoln emphasizes the long history of interest in bird migrations, referencing ancient observations, and he outlines the extensive research conducted by the Biological Survey which provides the backdrop for the book's exploration of avian migration patterns. This introduction establishes a framework for understanding the complexity and significance of bird migrations in North America. (This is an automatically generated summary.) Original publication data not identified Birds -- Migration U.S. Department of Agriculture circular no. 363 https://www.gutenberg.org/ebooks/65265 106088 106088