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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An aviation celebration
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Winter at Valley Forge
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Oktoberfest begins
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A glittering diamond in the rough
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Kochelsee in Bavaria
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Celebrating 30 years of eye-opening images
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Bridges to the past
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Southern right whale
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It s fair season
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A Bengal tiger in Ranthambore National Park, India
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Once upon a midafternoon dreary…
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Oh, happy day!
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Womens History Month
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It s Slovenia s Independence and Unity Day
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Chestnut-eared aracari in the Pantanal, Brazil
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A ‘Superior’ paddle
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The parenting of a piping plover
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Glacial spires in the fog
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New York City skyline
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Listening to the sea
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Float on
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Adorably evolutionary sea sheep
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Queen Elizabeth s Platinum Jubilee
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How Quảng Ngãi got its grove back
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Spot on for International Cat Day
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Sunburst at Angkor
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A visionary artist paints his own garden view
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A Latino art exhibition in Denver
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Breaking the fast for Eid
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The village of Castelluccio above the Piano Grande, Umbria, Italy