Scientists have recently mapped the painted lady butterfly's annual flight from equatorial Africa to northern Europe and back ...

Explore the captivating journey of millions of monarch butterflies as they embark on a spectacular migration to Mexico.

Monarch butterflies are migrating through San Antonio, laying eggs on milkweed, while other species like the Gulf fritillary ...

On the forest floor, monarchs litter the ground -- but most are not dead. They've just fallen from trees during the night and ...