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
It takes about 100 years.
87 months
2 weeks
3 weeks?
5 hours
It takes about one day.
It should take that long at all, it's all down to chance but it fairly quick.
about 23 days
It takes around 4 or 5 weeks for a baby bird to leave its Mom.