ScienceDaily reported on a study that found monarch have an internal compass system that they use to navigate during migration. They reported
Scientists have identified a new component of the complex navigational system that allows monarch butterflies to transverse the 2,000 miles to their overwintering habitat each year. Monarchs use a light-dependent, inclination magnetic compass to help them orient southward during migration.
To learn more read the full article at: Monarch butterflies employ a magnetic compass during migration — ScienceDaily.
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