“Here they come!” one said to the rest of the group hanging from the cave ceiling. Looking at the group of explorers entering the cave, “get them boys and girls!” and they started flying.
Soon the cave was full of exclamatory sounds emanating from the heckled group. The bats were hitting them from all sides.
“Why do they swarm like this!” an explorer grumbled.
“One will think they do it on purpose!” another said.
The bats flew away outside, they too were grumbling in inaudible frequency. “Nosy dumb human beings! There is no getting away from these creatures! Sheer nuisances!”