In the mountains of Mexico, a spy hummingbird ventures into the heart of a breathtaking monarch butterfly swarm. Few filmmakers have been able to capture the spectacle this closely.

Now, imagine seeing a massive monarch butterfly swarm, creating a breathtaking spectacle! This video by Nature on PBS shows a stunning flutter of butterflies. Keep reading below to learn about why.

The front end of a massive migrating butterfly swarm reached Northern California late last week, and the so-called painted ladies are flying through some unexpected places, including San Francisco ...

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

Swarms are back as snout butterflies make annual migration through San Antonio ‘Snout nose butterflies’ return to South Texas Sarah Spivey , KSAT Weather Authority Meteorologist ...

The Painted Lady Butterfly is the most widespread butterfly species found on the planet, ... Just a few years ago, a Denver Weather radar detected a 70-mile wide swarm of these butterflies migrating ...