Animal Migration

David Van MilliganMiss MaxwellJanuary 23 , 2008The periodic relocation of animals crosswise the induce of this planet has been documented throughout history and has been going on since the rise of animal feeling . This movement is gener aloney to whole a spource of nutrient or to find a to a greater extent suitable home ground for the fruitful make pass of the animal . This movement , called migration , has been observed in flat coat animals , flying animals and sea animals as well , and is observed in a vast transmutation of wild life . This migrant pattern is so all-important(prenominal) to the wild life of the earth that numerous species would not succeed should it become impossible for the creatures to fulfill this sanctioned instinctThe lowly cr declareed head butterfly , seemingly so fragile , delicate and unab le to defend itself , is a violence to be reckoned with when it comes to stamina in performing its migratory pass . It over-winters in a gauzy secluded forest of Mexico , and , it is direct cognize , takes to the air crossing much of the continent of duet America , breeding on the route to the wilds of Canada . The animal , with a life span of more or less niner months , emerges from its chrysalis as a butterfly . It migrates back to the cragged regions steep in the Sierras of South Central Mexico , where it takes over unblemished trees . This phenomenon was known to the Aztec nation that believed the creatures were the reincarnated souls of fallen warriors , complete with the ceremonial color of the dead(a) Aztec fighters . After awakening from their winter hibernation sometime in February and defect when they deject to breed , lay eggs and begin the round of drinks again . The new adult butterfly takes to the interchange , art gallery back to the north , layin g eggs along the focal point . There are us! ually three generations natural each year in a speech rhythm of life , and they all do exactly the same , performing as their ancestors spend a penny done for thousands of age .

Any break in this cycle could be catastrophic to the butterfly and loss of habitat could believably spell the loss of the entire species . The migration of flying creatures is seen redden in flying mammals , with bats moving back and forward amid the United States and Mexico regularly as weather and solid intellectual nourishment sources dictateIt is believed that the migration of land animals caused the western hemisphere to become populated as the early tribes of man followed the animals as they moved south across the Bering Land Bridge out of Asia close to 12 ,000 eld ago . When the land bridge melted with the end of the snuff it ice age the buffalo were trapped in jointure America , where they settled on the plains and become the chief provender source for the people who had so faithfully followed them across half of the planet . Men often followed migrating herds , assuring them a regular(a) feed supply even in winter and chthonic unbecoming conditions . The predictability of the herd s migration allowed primitive man to establish his own cycle of life...If you want to get a full essay, rove it on our website: OrderCustomPaper.com

If you want to get a full essay, visit our page: write my paper