I believe it takes about 7 months but not 100% sure
after the baby comes out of the egg it takes about 3-4 weeks. and about a month old it should look like a big bird. :)
It depends on which type of bird.
A month
87 months
It takes about 100 years.
2 hours
5 hours
2 weeks
3 weeks?
It takes about one day.
about 23 days
It should take that long at all, it's all down to chance but it fairly quick.