How do bats communicate?

Bats can also talk. Some social signals can be used to attract mates, defend food, summon the same kind and expel some bats. These signals are usually emitted at very low frequencies (sometimes people can hear them), so these sounds can travel far.

At the same time, these sounds will be different because of the difference of vocal bats. For example, when a baby bat is separated from its mother bat, it will send out a "lonely signal", and the mother bat will quickly distinguish whether it is her own baby or not according to the different sounds. In addition, many small bats are also sensitive to the echo frequency they often use.

Extended data

Echo location—

Most bats call between 20 and 60 kilohertz. The wavelength of sound wave with frequency less than 20 kHz is greater than that of most insect sound waves, so it will pass through insects without being reflected back; When the frequency is higher than 60 kHz, it decays quickly in the air, which limits its usable range, so the frequency of most bats' calls will not be higher than 60 kHz.

Some bats in the family Batidae, such as the spotted bat, have an echolocation frequency as low as 1 1 kHz. Another advantage of using very high or very low frequency calls is that these frequencies of sound waves are difficult to be detected by prey-insects, so bats can catch more insects.