Bird's nest symbolizes stability. Swallows should not only consider their own safety, but also their own Xiaoyan baby. If you choose this family as your own nest, it shows that the main family is very peaceful, kind and quite safe. It is said that bird's nest also represents a land of geomantic omen, and the life of the main family will be more happy.
Bird's nest symbolizes loyalty. Swallow is monogamous, representing the love and happiness of husband and wife. The main family chosen by the swallow will lead a happier and more harmonious life.
In fact, there are certain standards for choosing swallows to build nests. Not all farmhouses will be the choice of swallows. I have a keen perception of fate and future fortune, and I can also perceive the future of my family. If the swallow chooses to nest in your house, don't drive it away. Swallows are beneficial birds, friends of human beings and beautiful messengers. Will pass on good luck to the host family, and the future development of the host family will be smoother. Feng shui superstition has no scientific basis, and this answer is for reference only.
The material of swallow's nest is relatively simple, that is, soil, swallow's saliva and grass roots are mixed together. They fly to rivers and ponds, peck at wet mud, integrate it into particles, and then bring it back, mix it with straw and residual feathers, and build nests under beams or eaves. When building a nest, swallows build mud in the nest and squeeze mud balls from the inside out, so although the nest is uneven outside, the nest is relatively flat inside. The bird's nest is covered with light feathers, soft fur and fine debris, and it has become a very comfortable home.