About 4-5 years, depending on species. The female will only return to earth to build a nest for its young.
The male Indian Swift, once it leaves the nest, flies for the rest of its life. The female nests of course.
After about three weeks they fledge, or take their first flight. They may stay in the nest another week.
Probably takes between 6 and 7 weeks to leave the nest and start to fly.
To leave your home and go out on your own. It is a reference to birds when they leave the nest. It means you find a natural talent that you have which will allow you to be successful. Like when a fledgeling leaves its nest and learns to fly.
Eat it
The common swift is a bird that is adapted for long periods of flight and cannot walk on the ground due to its short legs and strong wings. It spends almost its entire life in the air, only landing to nest and raise its young.
7-10 days I guess I have babies and they just fell out of their nest
Baby blackbird's are equipped to fly the nest very soon, before they can fly and gather food. They will flop out and become fledglings.
The black birds should leave the nest around two weeks.
about three months after birth.
It takes about 13 days after hatching before a Bluet Robin to fly from the nest. This is after the mother has left them.
There is no nest, the immatures are aquatic. Look up tabanidae life cycle.