I can’t say what would be “too many” but there certainly would be many more of them. “One bat can eat between 600 and 1,000 mosquitoes and other insect pests in just one hour.”(factmonster.com) There is a bat colony in Texas which is reported to eat almost a half million POUNDS of insects each night! Without Bats, I don’t think we could leave the house at night!
In 2008, the Smithsonian Tropical Research Institute published a study stating that bats play a critical role in the food chain by significantly reducing insect populations, which in turn reduces damage to plants. Bats actually eat about twice as many plant-eating insects as birds do.
It is not only bats that prey on insects. After all, bats do not have their way to all insects. In the absence of bats, there are some other species that prey on insects. But this does not mean that the role of bats in keeping down insect population can be trivialized. At the same time one cannot say that in the absence of bats the insect population will be on the increase.
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