News Mexico Sees Bigger Butterfly Migration This Year (Reuters/ForestPress)
Story by Anahi Rama EL ROSARIO, Mexico - Wildlife officials say good weather should bring a surge in the number of monarch butterflies migrating to Mexico this year, after last year's cold resulted in the lowest numbers in more than a decade. Each fall tens of millions of the bright orange and black butterflies begin arriving in central Mexico's Michoacan state to winter in the fir trees after a 3,000-mile (4,800-km) trek from Canada that fascinates biologists.