Back home where the flies did not swarm like mice.

The rock was still warm from the day's heat, and black flies swarmed in the evening air.

The water provided no shelter: flies swarmed the girls' heads.

The biting flies seemed to sense his weakness and swarmed around them.

The flies swarmed with the heat of the day.

He becomes hypnotized by the head, which has flies swarming all around it.

But every time Emma got going, he just stared as if those flies were swarming from her lips again and didn't say a thing.

In its center, green and blue flies swarmed around a small pile of dung.

We've had a bout of warm weather and the flies are swarming everywhere.