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Drive Carefully!
This highway sign in northern Mexico reminds drivers to be careful. The mountains in this region funnel the monarchs into rivers of butterflies. People receive a flyer at toll booths. It reads, "Moderate your speed. Yield to the monarch butterfly." "Let's join the campaign!" says Rocio Trevino, who coordinates Mexico's migration-tracking project. "We can give this flyer to schools, friends and family who travel this highway." Rocio knows people are eager to help monarchs when they learn how.

Courtesy of Rocio Trevino, Correo Real.

Road sign along monarch buttefly migration route in Mexico.