Monarch butterflies' big white spots help them fly better

The big white spots seen on the wings of migratory monarch butterflies may have evolved to help them fly more efficiently on their long, hot journeys

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Monarch butterfly migration in Texas

New study: Bigger white spots translate into success for migrating monarch butterflies – Texas Butterfly Ranch

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How do monarch butterflies migrate so far? Hint, it's in their genes.

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Monarch butterflies' white spots may help them fly farther, scientists say