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
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Bright and colorful peacock feathers
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Star Wars Day
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The Alhambra in Granada, Spain
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Gulf Islands National Seashore, Florida
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Sounds of Bach come to Bath
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World Rainforest Day
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A grand event
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Let the Highland games begin
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Mexico celebrates its Independence Day
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Nighttime view over the Gulf Coast
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Poinsettia Day
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Día de los Muertos celebrations in Mexico
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Audubon Christmas Bird Count
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Pollinator Week
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Whales in winter
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Ruins of a royal temple
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Feeling chic on Fashion Week
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A perfect day to fly your flag
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Madame Sherri Forest, New Hampshire
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Aurora borealis
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International Archaeology Day
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The Badlands celebrates a milestone
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Val Gardena, South Tyrol, Dolomites, Italy
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Beethoven s 250th
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Bardenas Reales Biosphere Reserve and Natural Park, Spain
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Gamboa Crater, Mars
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A species no longer at risk
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Natural Bridges State Beach in Santa Cruz, California
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Naxos in the Cyclades Islands of Greece
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Presidents Day
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