Animal migrations are among the world's most visible and inspiring natural phenomena Whether it's a farmer in Nebraska who stops his tractor on a cold March morning to watch a flock of sandhill cranes passing overhead or a Maasai pastoralist who climbs a hill in southern Kenya and gazes down on a quarter million wildebeest marching across the savanna, migration touches the lives of most people in one form or another. (The passenger pigeon vanished completely in 1914; bison held on only because of last-minute conservation efforts.) Even as far back as the American Revolution, colonial leaders were alarmed enough about declines in Atlantic salmon to push legislation banning the practice of placing nets across the complete span of a river in order to catch every salmon heading upstream to spawn.
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"Animal Migration An Endangered Phenomenon?"Please download to view full document