For most people, bats are misunderstood as nocturnal creatures that are beneficial to the environment.
If you’ve ever gone out at night and heard strange squeaking sounds above you, then it’s most likely bats flying in the air.
Here is the actual reason that bats tend to be noisy in the evening.
Much like any other nocturnal mammal that spends most of their time hunting for food at night, bats are no different than hedgehogs, raccoons, and owls when it comes to being champions of sleeping all day.
Their most active hours are at night after the sun goes down, which is when they wake and start looking for food to eat.
Bats are unique in their ability to locate insects flying in the air using echolocation noises.
These are loud chirps and squeaks that will bounce off of anything within their range.
What is even more impressive is that these high-pitch sounds will bounce off of anything in front of them and are picked up by their large ears. This allows a bat to focus their attention on how large that prey is and where it’s going. Much of the movement from a small insect is actually predicted by a bat that will fly directly into an insect’s path to catch it.
Since they have such bad eyesight, echolocation is also used to locate other bats.
They’ll make a variety of screeches, chirps, or song-like noises to determine if they’re approaching a male or female bat.
These noises also are very distinct when two females or two males are talking to each other. Since we cannot hear the high frequencies that bats are using most of the time, we only hear the sounds that are around 20 Hz.
This is why the sounds from a bat are somewhat confusing for people since we cannot hear the full range of noises that bats are making.