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Image Number d4236-1 |
A monarch butterfly, Danaus plexippus, feeds on a New England aster, Symphyotrichum novae-angliae, flower. Every year, monarch butterflies migrate to and from overwintering sites in mountain regions of Central Mexico. They arrive in their summer breeding grounds — the Midwest — in late spring and in two or three generations dramatically increase their populations before returning to Mexico.
Photo by Peggy Greb.
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