The nest of the city swallow is made of mud and straw and is similar to that of the swallow, but has a completely open top. Bases from 4 to 6 eggs, which broke for 12-14 days. Parents feed small ones primarily with insects. They leave the nest after about 20-23 days. Parents have been feeding them for some time. Every year they can grow up to 2 hatcheries. After the winter, they built the new nest or on the remnants of the old or near it.