When I was a child, I read books, and I knew that swallows flew south in autumn to spend the winter, but I didn't know how to fly **.
Swallows
Also known as "Xuanniao", it is the only wild animal in nature that actively gets close to humans. It is said that "swallows do not enter the cold door", and swallows are known as auspicious birds. Swallows have very similar requirements to humans in terms of their living environment. People like quiet, transportation is convenient, and so are swallows.
Song Zhuyi's "Selected Miscellaneous Records of Yijueliao" said: "(Swallows) often enter the dead wood in deep rock caves, do not come back to the cold, paint their bodies with mud, and take off their feathers, and fly away when they are warm in spring." Jin Xijian is the history of Yanzhou thorns, digging wild mice and swallows to eat, and there is no rebel in the end, which can be seen. Yuan Wei Zhiyun: There are birds with bird names and swallows, there is no mud in the mouth, the spring breeze blows between the corridors, and the autumn society blows into the holes. It is also based on evidence. ”
Stinging swallows
In fact, swallows are burrowing creatures, and in many places where there are no houses, swallows burrow on rocks.
Jin Zhongxing Book said: "The Central Plains was in turmoil, and the villagers pushed Xi Jian as the mainstay, and took refuge in the mountains of Lu with more than 1,000 furniture. The mountains are in serious danger, the people are hungry, there is no grass in the wild, and sometimes they dig wild mice, sting swallows and eat them. "The swallow is a swallow that hides in a cave in winter.
Song Zhou Bida's "Erlaotang Magazine - Yan Yan": "The weather is very warm (warm), and the even shore is (collapsed), and the Yan Yan flies all over the river. When he returned home to dismantle the old earthen bridge, it was easy to use the brick (brick) stone, which were all swallows, so as to dispel the saying of "Wuyi Country" on the sea. ”
Song Luoyuan's "Erya Wing": "After the climate turns cool, the swallow flies away, hides in the dead wood in the deep mountains or the shore of the continent, paints its body with mud, and the feathers are all taken off, and new feathers begin to emerge in the warm spring." ”
Migration
Tang Yuanzhen"There Are Birds Chapter 20 (Geng Yin) Its Eleventh".
There are birds with bird names and swallows, and there is no mud in their mouths.
The spring breeze blows between the corridors, and the autumn society drives the embedded holes.
The thunder and rain sprinkled Su for a while, and the snow and frost destroyed half a year to death.
Drive away the long trade winds, and temporarily support the pillars. ”
Corridors. The porch in front of the hall.
Autumn Society. In ancient times, autumn was a day to worship the earth god. "Tongtian Perpetual Calendar" says: "After the beginning of spring, Wuwu is the spring society, and after the beginning of autumn, Wuwu is the autumn society." ”
Translation:The birds are called swallows, and they always have dirt in their mouths.
It seems that the spring breeze sends them to the carved beams and paintings, how relaxed and beautiful, but when the autumn society comes, they are forced to migrate, eat and sleep in the open, and sleep in the cave.
Spring is coming, watching the swallows fly happily, a moment of pleasure, but in the wind and snow for most of the year, who really knows, how the swallows came over?
Besides, the swallows are driven by the monsoon, and the spring comes and goes, even if they temporarily settle their home in the carved beams and paintings, what joy is there?
In the Tang Dynasty, some ** were degraded and died in a foreign land. It seems that the noble status is actually nothing more than a high-ranking servant of the emperor and the powerful. Yuan Zhen was also degraded, and when he saw the swallows coming and going in spring and autumn, he felt a little nostalgic. The swallow is used to emphasize the wandering of life and resonate with people.
Popular science
The so-called swallows fly south, friends in the north may think that they fly to the south, but in fact, the swallows will also fly south in the winter in the south. This "south" refers to the tropics and the southern hemisphere, and China's swallows generally fly to Africa, Southeast Asia and Australia, and the northernmost is Hainan Island. And the most "southern", the swallow flying south, may really fly to "South Africa".
Swallow mud
That is, bird's nest mud and bird's nest mud. The swallow chooses the mud, and the swallow has saliva to be smeared in the mud, so it has a special effect.
Materia Medica records: the main wind addiction rash, and the malignant stinging sores, the sores around the body to the heart of the person died, and water and compress, three or two days of sickness (healing). Treat the white bald sores of the mouth.
The Chinese character "燕" often carries a beautiful meaning. Such as "feasting, leisure, peace, tranquility, comfort" and so on. The poem "Yan Zhao Duo Beauty" of the Han Dynasty says: "Thinking of the double flying swallow, the mud nest monarch house". Swallows like to come in pairs, in and out of people's houses or under the eaves, so swallows symbolize the beauty of love and convey the feelings of missing lovers.