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This is Scientific American's 60-second science. I'm Christopher in Taguata.

When you think of pollinators, what comes to mind?

Bees, butterflies, maybe hummingbirds.

Well, how about flies?

Flies in general are the second most important group of pollinating insects.

So I think that they deserve more credit

than they often get. See Scott Clem is an insect ecologist at the University of Georgia,

and he's been studying a type of fly known as a hoverfly. You may have actually seen them before,

masquerading as bees and wasps. They tend to be yellow and black colored,

and they're kind of different from other flies in that regard. There are these little insects that

you're often finding flowers, or sometimes they'll actually land on your skin, seeking the salt

on your skin. By studying isotopes in the insect's legs and wings,

clemenous colleagues have now determined that some of these flies make a remarkable

autumn migration. They seem to originate near Ontario, Canada, and then they fly hundreds of miles

south to central Illinois. And it's possible that some go even further, thousands of miles perhaps.

They get up in high altitude air currents. They're able to just, and it's possible that some go even further, thousands of miles perhaps.

They get up in high altitude air currents.

...