Slideshow · Animals
Where America's Monarch Butterflies Go Every Winter
Every autumn, millions of North American monarch butterflies embark on an extraordinary flight of up to 3,000 miles to escape freezing northern winters. Guided by an internal sun compass and circadian
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3,000-Mile Flight To High-Altitude Mountain Sanctuary Forests 
15. Pinhead-Sized Eggs Laid Under Milkweed Leaves 
14. Striped Caterpillars Storing Milkweed Heart Toxins 
13. Metamorphosis Inside A Gold-Spotted Jade Chrysalis - AdvertisementSwipe or tap ▶ to continue countdown
12. The Autumn Methuselah Super-Generation 
11. Overnight Roosting Clusters Along The Midwest Flyway 
10. Antennae Clocks And A Sun Compass Guiding Flight 
9. Converging Through The Central Texas Funnel - AdvertisementSwipe or tap ▶ to continue countdown
8. Late-Blooming Prairie Nectar Fueling Fat Reserves 
7. High-Altitude Oyamel Fir Forests Of Central Mexico 
6. Millions Clustering On Oyamel Boughs In Michoacan 
5. Bough-Bending Bivouacs And The Cloud Forest Thermal Blanket - AdvertisementSwipe or tap ▶ to continue countdown
4. Western Monarchs Overwintering In Pacific Grove, California 
3. Coastal Eucalyptus Roosts At Pismo Beach And Santa Cruz 
2. Wing Tags Mapping Continent-Wide Flights 
1. Restoring Milkweed Corridors And Overwintering Sanctuaries - Advertisement🔥 UP NEXT IN THIS SERIES◫ 19 Slides
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Every autumn, millions of North American monarch butterflies embark on an extraordinary flight of up to 3,000 miles to escape freezing northern winters. Guided by an internal sun compass and circadian antennae clocks, eastern and western populations converge on specialized forest sanctuaries in Mexico and California.
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