Whether the sparrow needs a nest

The sparrow also needs nest.It usually puts Wa'an on human houses, sometimes occupying the nest of the swallow, and the nest is mostly built in the tree cave.This bird's nest is relatively leak, and it is generally composed of dried grass, wool or feathers.The role of the nest is mainly brooding. At the breeding period, it will produce eggs in the nest, and then incubate by the male and female, and the young birds will leave when they grow up to 1 month.