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Researchers in the South want people to report Monarch butterfly sightings this winter as more butterflies seem to skip the long migration to breeding grounds in Mexico. Millions of monarch ...

When a wounded monarch butterfly arrived at a Long Island wildlife center this summer, its chances of survival looked grim. One of its paper-thin orange wings had torn clean off, grounding the tiny ...

The wings of monarchs that survive a 2,000-mile-long migration tend to be spottier, suggesting that feature may aid the insects’ ability to fly. By Kate Golembiewski Every fall, monarch butterflies ...

Monarch butterflies from the western United States have arrived in Santa Cruz and other parts of the California Coast, clumping in the thousands on branches of Monterey pine, coastal redwoods and ...

SAN FRANCISCO (KGO) -- When this monarch butterfly hits the sky it won't be traveling alone. In fact, an energetic team of researchers will be following along with a revolutionary technology that's ...

MADISON, Wis. (AP) — The number of monarch butterflies spending the winter in the western United States has dropped to its second-lowest mark in nearly three decades as pesticides, diminishing habitat ...

DALLAS — The monarch butterfly isn't just iconic. It's also the state insect of Texas. But experts warn Texans are likely to see fewer of the insect's instantly recognizable orange and black wings ...

Maybe science has misunderstood the dining style of big monarch butterfly caterpillars. What insect watchers have called defense against the toxic latex a milkweed plant oozes may not be avoidance at ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. The US Fish and ...

The magnetic compass is the last unknown sense in migrating animals. For some scientists, the monarch butterfly is leading the way. The magnetic compass is the last unknown sense in migrating animals.