Monarch Butterflies during Migration

March butterflies are one of the few species of butterflies that migrate. In September and October monarchs in central and eastern U.S. make their way south to overwinter in the Gulf States and remote mountain valleys of south central Mexico, traveling up to 2,000 miles. They spend the winter massed on trees in the Gulf States and Mexico. One wintering site may attract millions of butterflies. In March the monarchs begin to return North.

Credit: photo by Gene Neiminen, US Fish & Wildlife Service [source and more information].

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