Just one insectivorous bat can eat 600 or more mosquitoes in a single hour.

In 1960 a paper was published called, The Echolocation of Flying Insects by Bats. This study found that a bat could eat 10 mosquitoes per minute or 600 an hour, which eventually got reported as 1,000 per bat, every night.
This science seemed to prove that bats eat a lot of mosquitoes each night, but the conclusion was flawed.

Image credit: John C. Abbott
Source: seaworld.org/Animal…