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The owl's real ears are on both sides of the eyes, the left and right ears are asymmetrical, the left ear canal is significantly wider than the right ear canal, and the left ear has a well-developed ear drum. Most owls also have a cluster of ear feathers, which form a human-like pinna. The owl's face is densely packed with hard feathers, which make up the "noodle plate", which is a good sonic collector.
In addition, the owl's large head allows for a greater distance between the ears, which can enhance the resolution of sound waves. When an owl searches for prey in the dark, its first response to sound is to turn its head, just as we listen intently to a tiny noise. But the owl doesn't really listen, it turns its head to make a difference in the time it takes for sound waves to reach the left and right ears.
When this time difference increases to 30 microseconds, the owl can accurately distinguish the direction of the sound source. Once the owl has determined the direction of its prey, it will attack quickly. Of course, the owl's sense of sight and hearing complement each other in hunting, and it is precisely because of its adaptation to the nocturnal life in all aspects that it becomes an expert at night hunting.
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Behind the eyes The circle behind the curved feathers, if you peel off that feather with your hands, you will find that the circle is the outer ear of an owl, which is equivalent to the pinna of a mammal.
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The feathers cover the ears of cats in the house. If you look closely, you can see it.
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In the curved hairs of the eyes, you just peel off the hairs.
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The largest owl weighs 15 pounds, the height is basically as tall as a three-year-old child, the head has a small bowl, the feet have a hoe handle, the grip is very sharp, the feathers range from black and yellow, the cry is miserable, grunt, snort, nocturnal action, can't see anything during the day, five or six pounds of rooster can take off and fly.
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The eagle owl (bubo bubo), native to Europe, has an average body length of 66 to 71 cm (2 ft 2 in – 2 ft 4 in) and weighs between kg (3 lb 8 oz – 8 lb 13 oz).
The eagle owl is also the owl with the largest wingspan: its wingspan is no less than a meter (4 ft 11 in), about the same as that of a 14-year-old.
The eagle owl feeds on almost everything that moves, from beetles to roe deer (a small deer native to Eurasia). They feed mainly on mammals (such as mice, rats, foxes, and hares), but they also eat all kinds of birds, including crows, ducks, grouse, seabirds, and even other owls.
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The morphological characteristics of owls are roughly as follows:
The feathers around the owl's eyes are radial, and the arrangement of the fine feathers forms a face plate, which resembles a cat, hence the name owl. Its feathers are mostly brown, scattered with fine spots, dense and fluffy, and it is silent when it flies.
Females of owls are generally larger than males. The head is large and broad, the beak is short, the sides are flat and strong, the apex is hooked, the base of the beak is not waxy, and it is mostly covered by hard feathers.
Like many carnivores, owls' eyes are located directly in front of their faces, which gives them excellent depth perception during hunting, especially in dimly lit environments. The big eyes are fixed in the owl's eye sockets and cannot be turned at all, so the owl has to keep turning its head.
They also have a flexible neck that allows the face to turn backwards, and the range of movement of the head is 270 ° due to the special structure of the cervical vertebrae. The left and right ears are asymmetrical, the left ear canal is significantly wider than the right ear canal, and the left ear has a well-developed ear drum. Most also have a cluster of ear feathers, forming a human-like pinna.
The auditory nerve is well developed.
The origin of the owl's name is difficult to pinpoint:
Cats were not popularized among the people after they were introduced to China, and it is generally understood that domestic cats were not domesticated until the Tang Dynasty.
In the Song Dynasty poems, all the descriptions of "owls" were only "owls" or "owls", and cats were called "civet cats" instead of "cats" at that time, which to a certain extent shows that the title of owl was not secularized at that time.
Because the owl is a common name, and the common name is difficult to study the first source, it can only be said that the name owl may be later than the Song Dynasty.
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Owls, a big disc face, copper bell eyes, a hook-like mouth, and a cute and fierce appearance.
The owl is a nocturnal hunter, with a pair of majestic eyes that sparkle in the night. 270 barrier-free rotating neck, standing on the tree as long as you twist your head, you can scan the whole scene, leaving no dead ends. Usually hunts at night, and is able to detect everything and quickly lock on to prey.
Owls have large eyes not only but also retina.
The rod nerve is densely packed on it, and the clarity of seeing the scenery is twice that of humans.
Cultural symbols. There are "night owls" among the people of our country.
When you enter the house, you don't come when you have nothing to do", "If you are not afraid of the night owl calling, you are afraid of the night owl laughing" and other common sayings, often regard the owl as an "ominous bird", called the soul chasing bird, the mourning bird, etc., and the ancient books also call it a strange owl and a ghost car.
Spirits or displacements are seen as symbols of doom and death.
The reason for these perceptions is mainly due to the fact that owls, due to their keen sense of smell, can smell the scent of terminally ill people, and can laugh, and in many places it is indeed not superstitious to die within a few days of hearing the owl's call, so the owl is called a mourning bird.
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OwlsThe ear piercings are two long deep slits, and around the ears, there are also short, stiff feathers around them, which play the role of collecting sounds. Moreover, the position of the two ear holes is asymmetrical, the right side is slightly higher than the left one, so that the misalignment effect of the sound on both sides can be obtained, and the distance and position of the sound source can be quickly corrected.
The maximum receptive area of owl binaurals is between 3,000 and 6,000 Hz, while humans are only about 1,000 Hz. As a result, owls can clearly hear faint sounds that are inaudible to humans.
The owl's eyes and ears are very different, and the eyes are large, but the eyes do not move, so it is necessary to observe the movement around them by turning their heads. The owl's head can be turned 270 degrees to observe its surroundings without moving its body, which is very beneficial for it not to alarm nearby prey in the silence of the night.
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。The feather collar around the ears is used to concentrate sounds. The front edge of the ear hole has a movable ear cap that may function like a reflector that concentrates sound.
Many owls have asymmetrical ear hole openings on both sides, and the ears are sensitive to sounds of different frequencies. This makes it possible to locate the sound source in both planes at the same time.
Click Copy.
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The ears of birds are very concealed, and the ears of owls are also very sensitive, and their eyes are extremely sensitive.
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In fact, the owl ears we see are not their ears, but the presence of human eyebrows. There were pinches and pinches of hair, though not symmetrical.
1. The position of the owl's ears.
In fact, owls' ears are grown underneath, similar to the position parallel to the beak, but in fact, their ears are not symmetrical, and one side is high and the other is low. Their ears are more sensitive than those of humans, which is due to asymmetry. In fact, there are many birds that are also like owls, their ears are asymmetrical.
For example, the valley owl, the palm ghost owl, etc., almost all nocturnal habits are like this.
The owl's entire face resembles a radar receiver, and their face can be reshaped at will. This allows them to better receive sounds, even sounds from far away, and can hear them very clearly, and judge the ** and location of these sounds. The asymmetrical ears of owls are largely due to their asymmetrical skulls, which are high on one side and low on the other.
And where this asymmetry is their ears.
There is no way for owls to turn their eyes, their eyes are fixed in their sockets like a doll's eyes, so when they want to turn their eyes, they have to turn their heads together. That's why owls have such excellent tracking ability, and when they lock on to a target, their eyes will be fixed on him, and they won't even turn their heads. When the owl is flying, it has locked on to the prey, but if it hears other sounds, they will not turn their heads at this time, but rely on their ears to judge the ** of these sounds.
The asymmetry also results in owls being able to pick up sounds from all directions and clearly determine their position.
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No animal is perfectly symmetrical, the owl's ears are not on the same level because it needs to be hunted, his head can be rotated 270 degrees, and hearing different levels of sound can better distinguish the position of the prey.
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To facilitate owl predation. Owls do not prey on high-flying creatures, but rather on rats that run off the ground. In general, mice live in a complex environment, and the owl's asymmetrical ears are more conducive to identifying the exact location of prey.
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Because the owl's eyes are fixed in the eye sockets, the ears are asymmetrical in order to better capture prey and survive better. It can be used to receive sound better.
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Because the current society is natural selection, the survival of the fittest, he can only adapt to survive by continuous evolution, so that she can judge the direction of the sound, and also know the vertical height of the sound.
The habit of eating and not eating does not change! It doesn't swallow iron stuff either! Even if you eat an owl, you will spit out what he can't digest! Owls swallow food and spit out the bones and hairs of voles or other foreign objects that cannot be digested!
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