One reason to make them happy: a single 3 1/2-inch-long little brown bat, the most common kind, can eat 600 mosquitoes in an hour.

Nothing is known about the diet, but vespertilionid bats generally eat insects.

To do this, the bats crush open the fruit and eat the parts that satisfy their hunger.

This, the researchers say, suggests that the bats eat the birds in flight.

A lot of people think that bats eat only mosquitoes.

One bat will eat thousands of mosquitoes a night.

A single mouse-eared bat may eat 600 in an hour.

These bats eat thousands of bugs every day.

Daubenton's bat often eats its prey while still in flight.

Palms are also home to insects, which the bats eat.