Where does the sparrow usually have eggs?

Sparrows are usually eggs in their own nests. Most of these birds are settled on human houses.Its nest is very simple. The materials used are generally dried grass, wool and feathers. After the nest is made, it will prepare eggs. It can produce 4-6 pieces each time. After 14 days of incubation, the young bird will produce shells.After 15 days of feeding, you can fly for food.