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Spring's Journey North
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Tracking the Monarch's Spring Migration
Every spring, millions of monarch butterflies re-populate eastern North America after surviving the winter in the
high mountains west of Mexico City. They flew up to 2,500 miles to get there last fall and spent the winter living
off their fat reserves. With just a few weeks to live, they'll race to produce the next generation. The following
fall, by instinct alone, the great-grandchildren of these butterflies will return to the very same mountain sanctuaries.
The information for this incredible journey is somehow passed from generation to generation so that miraculously
the butterflies return to a place they've never seen before.
In a unique partnership, you can join students and scientists across North America to gather and analyze data
about this fascinating event. We'll explore how wind and weather affect the journey. We'll discover the routes
the monarchs take and the risks they face along the way. We'll learn about conservation efforts on the wintering
grounds and at points along the path. Perhaps most importantly, we'll celebrate the return of this delicate sign
of spring as it moves across the continent.