Fall sets in motion a journey of some 3,000 miles for these monarch butterflies, which migrate from southern Canada to their wintering habitat in central Mexico. There, they cluster together in fir trees, creating the illusion of orange, fluttering foliage. They’ll remain in their winter roosts until March, when the journey back north begins. But no one individual monarch will complete the full roundtrip, which exceeds the normal monarch lifespan; instead it will take four generations of monarchs to complete the full migration, each individual seemingly driven by an internal compass that guides its flight path.
Monarch butterflies migrate south
Today in History
More Desktop Wallpapers:
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Carnival comes to Olinda
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Great cormorants
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Winter Olympics in Beijing
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In the Himalayas for International Mountain Day
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National Aviation Day
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Staring down winter
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The frog prince?
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Dark skies over New Mexico
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Chaco Culture National Historical Park, New Mexico
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Bournemouth beach huts
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Rothenburg ob der Tauber, Bavaria, Germany
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European Day of Parks
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Take the Stairs Day
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White Sands National Park turns 90
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American bison
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Mount Fuji Day
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Mountains fit for a queen
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International Geodiversity Day
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Great Backyard Bird Count
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Turning darkness into light
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Train crossing the Tadami River in Japan
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These laurels are hardy
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International Day for Biological Diversity
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‘You should see the one that got away!’
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New York City skyline
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Happy Easter from the ‘peeps’ at Bing
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Humpback whales in Maui, Hawaii
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Wild and Scenic Rivers Act
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European hedgehog in Sussex, England
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Iceland awaits the Yule Lads
Bing Wallpaper Gallery

