蝴蝶的神奇之旅 The Incredible Journey of the Butterflies (2009)认领

　　The documentary depicts monarch butterflies’ great and mysterious migration. Each year’s autumn, millions of monarch butterflies start their incredible southward migration from Canada, cross America, to Mexico. They fly above 2,000 miles to arrive the mountain of Mexico ..... 　　The film opens with caterpillars munching milkweed in southern Canada in late summer. Soon each caterpi...