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

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

Ever notice white spots on monarch butterfly wings? Turns out they're key to migration success - Study Finds

Natural history

Analyze This: White wing spots may help monarch butterflies fly far

Comparison of relative white spot size on butterfly forewings (% of

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Backyard Ecology Blog, 2021

Monarchs' white spots aid migration