Why do bats fly in the dark of night without hitting walls?

Because the bat itself emits ultrasonic waves, it is equivalent to a small radar that can fly in a dark environment according to echolocation.

It may be that bats themselves have an organ to discern direction in the dark, so they can not hit a wall.

Bats fly at night, not by their eyes, but by their own so-called radar, and the radar positioning system we use today is also based on the principle of bats.

Sparatier discovered that bats fly at night to catch food, and it turns out that they rely on their sense of hearing to identify directions and identify targets!

Later, after people's research, the mystery was finally discovered: bats use their throats to emit things that cannot be heard by human ears"Ultrasound"This sound travels in a straight line and reflects back as if it were light on a mirror. Bats receive this with their ears"Ultrasound", you can make quick judgments, fly freely with dexterity, and catch food.!

The eyesight of bats is very poor, mainly by ultrasonic positioning, bats emit ultrasound, and the ultrasonic waves meet objects ** back to the bat, so they will not hit things....

The reasons why bats appear at night are as follows:

1. Afraid of light and heat.

Bats cannot withstand the light and heat of the sun, so they rest in a dark place during the day and come out at night to avoid sunburn.

2. Avoid predators.

Lizard. Snakes and other animals are the natural enemies of bats, and these animals are active during the day, so bats come out at night and are relatively safe.

3. Food to eat.

Most bats eat insects, and most insects move at night. It is much easier for bats to catch insects at night. The living habits of bats have been formed over a long period of evolution.

The habits of bats.

Bats live in all kinds of large and small caves, in the crevices and ceilings of ancient buildings.

Partition walls, tree holes, rock crevices on the mountain, and some southern fruit-eating bats hide in palm and banana trees.

behind the leaves. Some bats have populations of thousands of individuals, some live together with males and females, and some live separately from males and females.

Bat animals have a wide range of diets, some species like nectar, fruits, others like to eat fish, frogs, insects, suck animal blood, and even eat other bats. In general, large bats generally feed on fruits or nectar, while most small bats mainly prey on insects.

Make use of echolocation.

Adapted to their ability to fly and live a nocturnal life, bats have also undergone a series of important changes in their physiology. Usually bats have poor vision and an unusually developed sense of hearing, and at night or in very dim environments, they are able to fly freely and catch food with unerring accuracy, the most basic means of which is to be able to use echolocation. Experiments have shown that most bats use ultrasound pulses from the larynx to localize.

However, some large fruit-eating bats, such as brown fruit bats, have a special echolocation ability, and they use the sound of tongue-smacking as the basis for sound localization. Echolocation is important for bats to occupy niches that are insectivorous to birds at night or in darker environments, where they are the habitat of a variety of birds during the day.

Activity characteristics

It has been observed that bats living in temperate zones spend much more time inactive than active in their lives, sleeping almost all day and part of the night in summer, and some species when the weather is cold, like birds, carry out long-distance seasonal migrations to the south to spend the winter, and those that remain in place enter a long period of hibernation during the harsh winter.

According to incomplete statistics, the big-eared bats and northern brown bats that inhabit the vicinity of Leningrad spend only 1 15 1 20 of their active time in their lifetime, and the rest of the time they sleep (Kugakin, 1959). When the ambient temperature reaches 16 28, the bat is in a deep sleep state, and the physiological function of the sleeping bat slows down and the metabolism decreases. Due to low metabolic consumption, some bats have a longer lifespan.

Because its mouth emits ultrasonic waves when it flies, it returns to its ears when it encounters a building, just like an airplane's radar

Bats have eyes, but their eyesight is not good. It relies primarily on hearing to discern directions.

At night, the bat emits ultrasound waves from its mouth, and the ultrasonic waves meet an obstacle** to the bat's ears so that it hears something in front of it and does not crash into it again.

That's why bats don't hit things when they fly at night.

When we usually walk at night, we tend to walk very slowly because we can't see the road clearly, but bats can fly quickly in the dark without a trace of light, and many people are very surprised when they find this phenomenon, and they don't understand why.

Bats can fly fast in the dark not because they have excellent night vision, but because bats emit a kind of ultrasound during flight, which will be emitted back after encountering obstacles, and bats use these reflected ultrasonic waves to determine whether there is an obstacle ahead.

This ultrasound emitted by bats is inaudible to the human ear, scientists.

After studying the way bats fly, we used this method to install radar on the plane, so that the plane we usually fly in can fly safely in the dark.

This is the signal that can be sent out by the bat like radar, and the signal can go forward and come back when it encounters something, which will help the bat to find its way.

The sonar system of bats is too sensitive, and the objects of bats are tiny mosquitoes and the like. Information on mosquito activity is also very weak. Only in the dead of night is the best time for bats to catch mosquitoes accurately. So bats always travel at night.

Bats rely on sound for positioning, not vision. So, for bats, there is no difference between daytime and nighttime activities. The main thing is that most of the bats' food is nocturnal, so the bats have to come out to eat as well.

Bats are difficult to copy

Withstanding the light and heat of the sun, anyone who has seen a bat knows that bats are.

It is black and absorbs a lot of heat when it comes out during the day. Black can be well hidden in the night. Rest in a dark place and come out at night to get sunburned, and you can also hide from predators.

Most bats feed on insects, and many insects move at night, so bats also come out at night.

Bat life habits bai is a nocturnal animal, it has a sound du

Na system, so can zhi to ignore the DAO light problem, night action inside.

Most of them choose to be nocturnal in order to avoid predators and dangers, and they have evolved a sensitive low-light environmental vision, or auditory or even olfactory system, to help them move in the night environment, and bats are just one of the species that have mastered one of these ways.

When flying at night, as long as the source of flight is high, you can avoid most possible obstacles, and your vision is not that important. But for bats, they fly at night and their main task is to hunt. If you want to hunt insects flying around, you need to face a complex environment.

As we all know, bats use echolocation to fly in the night sky, and by emitting high-frequency ultrasound waves and receiving the reflected sound waves, they can know their surroundings. Therefore, the reason why bats can fly in the night sky is that in addition to the "wings" composed of skin membranes, they also have super ultrasonic positioning ability. So the question is, are the eyes of bats still useful.

Many people think that bats are blind, or at least have poor eyesight. But in fact, bats have very good eyesight and can see ultraviolet rays that most mammals can't see. But for most bats, ultrasound positioning is still the most powerful**.

Bats are pterocarps, mammals, bats have a large wingspan, and can wrap their bodies from head to toe tightly.

It is a pity that these wings are completely a thin layer of flesh, which cannot withstand the wind and sun, and is easy to get sunburned. Bats are relatively weak, and there are many enemies during the day, so if you can't fight, you have to hide. The ancestors of bats are small mammals on land, and in order not to be used as prey by natural predators, they have formed a habit of lying in the day and night, and have developed the ability to see and hear at night, and this gene has been passed down.

Based on these factors, bats can only come out at night to hunt insects and fill their stomachs.

The bat relies on sound waves to locate itself, and it emits ultrasonic waves that fold back into its ears when it encounters external objects, thus determining its surroundings. Noisy daytime can interfere with sound waves, so bats choose to travel at night.

Bats are the only mammals that can fly with their wings, and other mammals, such as flying squirrels, glide through the air only on the pterygoid genus! At night, bats rely on sound waves to find their way and hunt. They emit sound waves that are inaudible to humans. When this sound wave encounters an object, it returns like an echo, allowing the bat to tell if the object is moving or stationary, and how far away it is.

The long-eared bat preys on insects in flight, and it can also hunt insects from leaves.

Catch the worms. Its large ears allow it to accept echoes.

As it flies, it makes a sound from its mouth. This sound is called ultrasound, and the human ear cannot hear it, but the bat ear can hear it. The ultrasonic waves move forward like waves, reflect back when they encounter obstacles, and transmit them to the bat's ears, which immediately change the direction of flight.

Scientists imitated the method of bat pathfinding and equipped the plane with radar. The radar emits radio waves through the antenna, and when the radio waves encounter obstacles, they are reflected back and displayed on the phosphor screen. From the fluorescent screen of the radar, the pilot can see whether there are any obstacles ahead, so the plane is very safe to fly at night.