How long does the grass bird born until flying?

The grass bird was born until the flying for about 20 days.This bird has matured in about 80 days, but it takes some time to reproduce.It does not have a fixed period of reproduction, as long as the climate is suitable to produce eggs.Usually male birds will call for puppets, and then match the females, and they will be prepared to build nests after pairing.Usually 4-6 eggs are produced per nest, and the male and female birds will incubate in turn, and can not be hatched until 13-17 days.