Why Come Back North in the Spring?
Taking a Global View

ElRosario0091It's winter up north. Monarchs are sheltered on their winter grounds in the mountain Oyamel fir forests in Mexico. The trees and altitude keep the habitat warm enough so monarchs won't freeze, but cool enough to help them save energy.

Think and Journal!
Why do you think monarchs leave these winter sanctuaries and migrate north each spring?

Hint: They are born with the urge and ability to migrate north. Scientists think the geography of our hemisphere has a lot to do with why this instinct developed.
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