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Risks and benefits of cold? Look for clues!
This picture reveals clues about ways monarch butterflies are affected by the cold. Why are so many monarchs on the ground? Are they in danger? This week, learn about the risks monarchs face—and the benefits they receive—from their cold winter habitat.

Image copyright Dr. Lincoln P. Brower, Sweet Briar College
Monarch butterfly habitat in Mexico: Risks and benefits of cold?