Is the Bird Bird's viviparous?

The Bird Bird is not born, but an egg.This bird is widely distributed, and the reproduction time is not fixed. If it is artificially raised, there is often no clear reproduction period, as long as the temperature is appropriate.It can breed 2-3 nests a year, with about 4-8 eggs per nest. Its eggs are white, there is no spots on it, and it is oval. It takes about 18 days to hatch to break the shell.