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
How to raise Monarch Butterflies - Feathers in the woods
How the monarch got its spots: Long-distance migration selects for larger white spots on monarch butterfly wings
Natural history
The Monarch - Monarch Conservation ToolboxMonarch Conservation Toolbox
The monarch butterfly's spots may be its superpower
Southwest Monarch Study
Milkweeds, monarchs and a moth Lehigh Valley Nature Watch
Monarch Butterfly Sightings: Spiritual Meaning and Symbolism
Are Western Monarchs on the Rebound?