Monarch butterflies have distinctive orange-and-black wings with small white spots. And it's those spots that recently caught the attention of a group of scientists. As NPR's Nell Greenfieldboyce ...

Butterflies ... white wing spots that are three percent larger than those of monarchs found in places such as Georgia or Minnesota. At the same time, the Mexican animals have three percent less ...

Monarch butterflies with larger white spots on their wings are more successful at migrating long distances. It is unclear how these spots help the butterflies, but it is possible they create ...

Butterflies and moths are among the most visually captivating insects on the planet. From transparent wings to brilliant iridescent hues, their striking appearances and remarkable adaptations offer a ...

Learn what an American lady butterfly and caterpillar looks like. Plus, see how it compares to a painted lady butterfly.

Think of a monarch butterfly, and a distinctive image pops up: black-and-orange wings, with a sprinkling of white spots around the black edges. Those white spots may actually help monarchs ...

Monarch butterflies with more white spots on their mostly orange-and-black wings are more successful at long-distance migration. Some scientists... Monarch butterflies' white spots may help them ...

The white spots on the edges of a monarch butterfly's wings might give it an advantage while migrating, according to new research. Sanka Vidanagama / NurPhoto via Getty Images For a migrating ...