November 1, 2010

Monarch Butterflies, Mexico

Photograph by Joel Sartore, National Geographic

This Month in Photo of the Day: Animal Migration Photos

Millions of monarch butterflies travel to ancestral winter roosts in Mexico's shrinking mountain fir forests. Surfing winds from southern Canada and the northern U.S., they travel thousands of miles, taking directional cues from the sun.

See more photos from the November 2010 story "Great Migrations."



Watch Great Migrations this month on the National Geographic Channel »
Attend the NG Live! Event "Making of Great Migrations" Tonight! »

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