Monarch Butterflies travel by the Sun and Compass. — Old Guv Legends

When monarch butterflies wing their way south to central Mexico each fall, they use the sun to ensure that they stay on course. But how they head in the right direction on cloudy days has been a mystery—until now. It turns out they use Earth’s magnetic field as a kind of backup navigational system. It’s […]

via Monarch Butterflies travel by the Sun and Compass. — Old Guv Legends

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