Arctic terns are the masters of migration- they travel between the poles each year, traveling from 15,000 to 25,000 miles each way, twice a year. These two are using a GPS to help them!
Six colors- white, gray, yellow, orange, black, blue
Derby #177: I Love The Arctic
Arctic terns need a GPS to migrate
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- Dec 10, 2010 6:17 PM
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