Tibetan science popularization ｜ Sight of the "bird" of wetlands: Xianhejun on Poyang Lake

Most of the winter migratory birds in Poyang Lake wetland come from distant Siberia. After more than 5,000 kilometers, it came to the winter here. The grass on the shore of the lake and its underground stems, water plants in the water, plankton, small fish and small shrimp, and snail crabs at the bottom of the lake. These rich foods like huge magnet stones attract more than 500,000 migratory birds gathering together So far.

If you want to see the style of winter migratory birds, come to Poyang Lake Wetland. This is an excellent appreciation point. This can not only watch the spectacular scene of the Bird's collection, but also carefully observe the scenes of crane -cultivation, as well as how big geese "stand out and put a whistle" and "take turns to rest".

If you are lucky enough, you can see all cranes in China in the Poyang Lake area (black -necked cranes are plateau cranes, and red -necked cranes are mainly living in South and Southeast Asia). Of course, the red -crowned cranes are mainly overwinter in several wetlands along the coast. Like Snowy geese, sandy hills are usually lived in North America. Occasionally, they fly to Poyang Lake. Common cranes are: gray cranes, white cranes, white -headed cranes and white pillow cranes.

All cranes are national second or even first -level protection animals in China. The four common cranes in Poyang Lake in winter, except for gray cranes, are all global extremely endangered bird species, and the number of worlds in the world is less than 10,000. Only. Although the crane also eats some small fish, shrimp, snails, and crabs as a supplementary source of protein, it is mainly vegetarian enthusiasts. These treasures can be met in Poyang Lake because after the water retreats of the lake in winter, a large number of green grass has grown at the bottom of the lake, and the rice in the rice fields around the lake area has attracted them to find food. The clever arrangement of nature is really amazing.

The gray crane is the largest number of cranes and the smallest, because a gray clothes are nearly black, and the ancients call it "Xuanhe". The Han Dynasty Sima Qian's "Historical Records · Le Shu" recorded: "When the teacher was in the piano, there were Xuanhe two eight, and it was gathered in the gallery door." It can be seen that the gray crane at that time was still very common.

Gray crane with a gray clothes

The white crane corresponding to the gray crane is full of stubbornness, and it is particularly eye -catching under the warm sun of Poyang Lake in winter. Even in the fog and blurred, it is the target bird species you can discover the first time. Although more than 90%of the white cranes around the world overwinter in the Poyang Lake area, the scarce crane category in this world is only about 3,000, which is distributed in the Poyang Lake Basin with more than 4,000 square kilometers. Fortunately.

The male adults are slightly larger than female individuals. There is no difference in appearance. The young birds are faint coffee yellow. The Tang Dynasty poet Cui Yan wrote in "Yellow Crane Tower": "As soon as the yellow cranes are gone, Baiyun is empty for thousands of years." There is no "yellow crane" in the world. The poet described it. Baihe.

white crane

Those who are new to bird watching are easy to confuse the white pillow crane with the white -headed crane. In fact, the ancients had a meticulous observation of the two of them. For example, in the Three Kingdoms, Wu Luzheng's "Mao Shi Lu Shu Guang Yao" described the white pillow crane: " , Man's red cheeks. "Cang, almost gray -blue; red cheeks are red cheeks. White pillow crane is a very alert crane. According to our observation experience, it is usually kept at 300 meters away from human safety. The ancients did not have such a high -power telescope that are so good today, but they can clearly describe their typical characteristics. It seems that at that time, the white pillow crane was more than now.

White pillow crane

More content in the Tibetan science popularization zone

On "Knowledge is Power" Weibo

"Tibetan Science Popularization" topic establishment area

Interested friends

You can also follow the attention

"Knowledge is Power (Han Tibetan)" profile: This magazine aims to popularize scientific knowledge, spread scientific thoughts and scientific methods, and promote the spirit of science. Scientific wisdom, ignite the dream of science.

- END -