02074cam a22003013u 450000100060000000300070000600500170001300600020003000700050003200800410003704000110007804100170008905000070010610000470011324500270016026400510018730000470023833600260028533700260031133800360033750000310037350801100040452011300051453400450164465300230168985600430171299900170175542739UtSlPG20260610133958.0mcr n260607r2013||||utu|||||o|||||||||||||| d  aUtSlPG 7aen2iso639-1 4aQL1 aCoward, T. A.q(Thomas Alfred),d1867-193314aThe Migration of Birds 1aSalt Lake City, UT :bProject Gutenberg,c2013  a1 online resource :bmultiple file formats  atextbtxt2rdacontent  acomputerbc2rdamedia  aonline resourcebcr2rdacarrier  aRelease date is 2013-05-19  aProduced by Chris Curnow, Sue Fleming and the Online
Distributed Proofreading Team at http://www.pgdp.net  a"The Migration of Birds" by T. A. Coward is a scientific publication written in the early 20th century. This work meticulously explores the phenomenon of bird migration, presenting various theories and factual observations gathered from the efforts of numerous ornithologists. The focus lies on understanding the intricate behaviors, patterns, and environmental influences that drive different species of birds to migrate seasonally.  At the start of the book, Coward sets the stage by defining migration and explaining its significance to birds and other species. He delves into the complexities of migration, noting that while the traditional view categorizes birds as either migratory or sedentary, many species exhibit varying degrees of movement based on seasonal changes, food availability, and breeding needs. The opening chapters introduce key concepts related to the causes and conditions of migration, as well as the historical understanding of these patterns, reflecting the author's thorough research and commitment to advancing knowledge in the field of ornithology. (This is an automatically generated summary.)  nOriginal publication data not identified  aBirds -- Migration40uhttps://www.gutenberg.org/ebooks/42739  c83578d83578