This is very strange. If your house is messy, domestic swallows don't like to nest in your house. Therefore, in order to attract domestic swallows to build nests, it is necessary to clean the front and back of the house so as not to make the house smell.
2, a variety of green plants
There are also some families, even if the home is clean, there are no domestic swallows. This is because the cleanliness is outrageous, there are no green plants in the yard, so we should plant more flowers and plants in the yard.
3. Ensure the "safety" of the eaves.
Swallows come back to nest and have no roof. Swallows are very spiritual. They will choose the most suitable roof to nest, ensuring that the roof is not leaking and cannot be blown by wind and rain, so that swallows will consider nesting.
Extended data:
Swallows nest under the eaves of farmhouses. Most of these nests are made of saliva-bonded soil and grass stalks, covered with soft weeds, feathers, rags and so on. And some Artemisia annua leaves.
Swallows usually return from the island to the farm near the farmland (insects) to breed from April to July. Breeding 2 nests every year, mostly from May to early June and from mid-June to early July. Each nest lays 4 ~ 6 eggs. Males and females hatch eggs together. 14- 15 days, chicks hatch and parents eat together. The chicks fly out in about 20 days, and then feed them for 5 ~ 6 days, so they can feed themselves.
Swallows feed on insects and are used to preying on flying insects in the air, but they are not good at searching for insect food in cracks in trees and on the ground. They can't omnivore berries and seeds and eat leaves in winter like rubber grouse and Thunderbird, nor can they dig up larvae, pupae and eggs of latent insects like woodpeckers and woodpeckers. There are no flying insects for swallows to prey on in winter in the north, so they migrate.