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Eli Schilzerman

Monarch butterflies in Mexico. These butterflies take off from the ground. During their migration they have been observed flying at speeds of 50 km/h with a good tailwind behind them. They have also been observed at altitudes of over 9,000 feet (3 km) and they have also been seen flying over 500 km of open water. From the series " The Great Migration" of the National Geographic Channel

Researchers have discovered how the brains of monarch butterflies aid in their multigenerational migration

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