A swarm of butterflies, winging its way south for the winter, was "spotted" as large blue blobs on weather radar last week over southern Illinois and central Missouri.

Insect swarms create so much electricity that they may influence the weather, study finds Lightning bugs: A new study found that insects are a potent source of airborne electric charge ...

Butterflies gathered on two liatris flowers on a property in Minnesota.

What’s the deal with all the butterflies? KXAN viewers have been reaching out, wondering about the increase in butterflies in Central Texas this fall.

There are nearly 20,000 butterfly species in the world today. About 750 species inhabit the U.S. alone. With so many butterflies in the world, one would think they would band together to improve their ...

I hiked up along a plunging river through dusty brown vegetation, whose seed pods rattled like a snake’s tail as I brushed ...

About one billion small butterflies, known as Painted Ladies, are flying north from the deserts of Mexico.

Swarms of butterflies are inundating portions of South Texas — and they aren't the monarch migrations most Texans know and love.

There aren't enough to block out the sun, but social media posts out of the Lake Tahoe area show enough swarming butterflies to get just about anyone who encounters them to pull over and start ...

The butterfly species, which migrates from the Mojave Desert to Oregon every spring, is experiencing a population explosion this year, and their fast-moving and massive swarm is expected to reach ...

Why Do Monarch Butterflies Swarm? Monarch butterflies, like other butterfly species and birds, must migrate to warmer climates during the cold winter months. Monarch butterflies are unique because ...

SOME, at least, of the swarms of V. cardui originate in Africa, one of which I witnessed a day's march west of Sowakin, in Nubia, in March, 1869. Our caravan had started for the coast, leaving the ...