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Bird migration, a perilous journey - Alyssa Klavans

TED-Ed Lesson: Nearly 200 species of songbirds migrate south for winter, some traveling up to 7,000 miles. No easy task, the annual journey is dangerous to birds due to landscape change -- so much so, that only half the birds that migrate south will return home for spring. Alyssa Klavans details why…

Publisher
TED Ed

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