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Hubei man encounters a "strange bird" with his neck turned upside down as thin as a piece of paper, pretending to be a grass without moving

Time:2022-10-04 10:54:04 source:ucutxmastrees.com author:Poultry Read:896次
Hubei man encounters a "strange bird" with his neck turned upside down as thin as a piece of paper, pretending to be a grass without moving

Encounter strange birds on the roadside

On August 28, a man in Hubei accidentally found a strange bird standing motionless on the side of the road. At first he thought it was something The specimen model placed here by the person, and when he got close, he found that the bird was quietly staring at itself with its small eyes. This strange bird raised its chin, stretched its neck straight, and had a flat body when viewed from the front. , like a piece of paper. The man circled around the bird, and the strange bird also quietly changed the angle of his body so that his face was facing the man. Amazing. Netizens who are familiar with animal knowledge recognized at a glance that this was the jiān, which belongs to the second-class national protected animal, and joked that the jiān might be the legendary "bian magpie", after all, its whole body is really is flat. In nature, survival is not easy. The confrontation between the hunter and the prey is not only in terms of strength, size, and speed. Both the hunter and the prey are trying their best to hide themselves in the environment. Some animals have developed the ability to hide themselves to the point of being superb, which is called mimicry.

Master of Mimicry

Mimicry is relatively rare among birds, and the mimetic ability of the small reed snail can be said to be one of the best among birds. Some people may want to ask, this little reed scorpion on the side of the road doesn't look very smart. Not only was it seen through at a glance, but it also didn't know how to escape. In fact, this is because the mimesis of the small reed turtle is a stationary simulation. As the name implies, it will remain stationary during the simulation, using color, shape and behavior to help them integrate with the habitat, so as to achieve the effect of "invisibility". The small reed scorpion mainly lives in the reed field. It looks unremarkable when it is usually active, and it looks no different from ordinary water birds. It uses its long beak to prey on small fish and shrimp in the water. But when it senses danger, it will immediately stand up straight, tighten its wings, and hold its head high. The vertical stripes on the chest and abdomen are exposed, and from the front, it looks like a reed inserted into a pond, and the small reed scorpion will quietly adjust its body and try to face the predators as much as possible to avoid danger. Another point is that many predators have strong dynamic vision and poor static vision. For example, cats as small bird killers can keenly detect moving objects, and with their flexible hands, they can prey on birds such as sparrows, but it is difficult for them to distinguish stationary objects ten meters away. what. As a wading bird, the small reed scorpion has not strong flying ability. It is not realistic to fly to avoid predators. It is better to stand still and gamble, betting that these predators have poor static vision. . Only when the predators are close enough, they will flap their wings and take off, and then burrow into another reed not far away, continuing to camouflage. The small reed scorpion has two relatives, the yellow reed scorpion and the cannabis scorpion, which are also mimicked in the same way. The cannabis is even more courageous, and it will only fly away when the predator is within one meter. The cannabis can reach a height of 70 centimeters and its wingspan can exceed one meter. Even so, it can avoid danger again and again by mimicking, not to mention the small reed scorpion, which is only half its size. In addition to the small reed scorpion, there are many masters of mimicry among birds, and their mimicry is enough to make it difficult to distinguish the true from the false.

Environmentalism

Nighthawk The nighthawk is a medium-sized bird that prefers to be active at night. It has long tail and wings, which it prefers during the day. Rest in the tree. They have a characteristic when they are resting, that is, they like to lie on the tree, then close their eyes and shrink their necks. With the gray-brown feathers on its body, it looks like a piece of dead wood, and people give it the nickname "bark sticking". Nighthawks are also birds that build nests on the ground, so nighthawks sometimes appear on the ground. The mottled feathers on their backs can help them disguise as dead leaves, and the eggs it lays also come with it. "Camouflage" color, it looks like ordinary stones on the side of the road. Can you see the night eagle in the picture? There is also a bird called the tawny toad (chī) under the nighthawk's head. They also like to pretend to be part of a tree. Their habits are similar to owls, and they will stay motionless during the day. Standing on a branch to rest, its body length is nearly 50 centimeters. Once it detects the wind and grass, it will narrow its eyes and raise its beak to keep its body still. The gray-brown body looks like a tree tumor. It rests on the branch with its mouth open, waiting for the insects to fly into its mouth, which is one of the origins of its name. At night, the brown toad will walk through the branches vigorously, catching insects in the fields, which can destroy a large number of agricultural pests, and is one of Australia's representative insect-eating and beneficial birds. The willow ptarmigan molting is common in many birds, usually in summer and winter, but the willow ptarmigan is molting all year round, and the color of the coat varies from season to season. In this way, thunderbirds hide themselves from predators in different seasons. The spring willow ptarmigan, for example, has mostly white body hair with brownish-yellow stripes in spring, and black-brown feathers in summer. In autumn, its feathers turn brown again with black markings. In winter, when the snow is white, the willow ptarmigan turns completely white, with only a little black on the tail. Willow ptarmigan in winter

pretend to be dangerous creatures

In addition to mimicking the environment, some birds also mimic other dangerous creatures. For example, liè, they are small birds in the woodpecker family, but they are different from other woodpeckers. They like to eat ants. Their tongues are long like other woodpeckers, and they have mucus, which can quickly penetrate The ants stick out of the ant nest and eat it. Their feathers are generally dark brown, with dense horizontal markings on the chest and neck, and their necks are very flexible. When frightened, they will twist their necks, looking like a snake's head is twisting , scare away predators in this way. Therefore, some people call them "snake-headed birds" or "crooked-necked birds". There is also a bird called the Soot Sad Sparrow, which is a circle larger than the sparrow. Their adult body calls are loud, and their coats are gray like soot, so they are called soot mourning sparrows. But their chicks are different. At birth, their whole body is covered with eye-catching orange-yellow fluff, with small black spots interspersed between the white tips of the fluff, and the chicks of the sooty mourning sparrows will curl up and wriggle. Move slowly on the branches, wiggling your head from time to time. If not, who would have guessed that the yellow "poisonous caterpillar" on the treetops would be a bird. In order to protect the young, the adults of the sooty sadfinches will feed the chicks once an hour, and these young birds will not beg their parents for food, because they cannot confirm whether they are flying to their parents or not. Predators, until 20 days later, when the chicks gradually grow up, they will take off this camouflage and spread their wings to the sky.

(责任编辑:Beast)

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