The bird is fully fledged, kick him out of the nest.
They're called birds.
Either a nestling, a fledgling or a chick.
Yes,yes it is.
A fledgling is a bird that has not yet left the nest or has not yet learned to fly. It is a fairly loosely defined term.
The young of a newly hatched bird is called a hatchling. Once it leaves the nest, but while still dependent on the parents, it is called a fledgling.
Yes, if it's fallen out of the nest prematurely, before it's ready to get food itself. However fledgling stages of bird development are a natural phase and it's not uncommon to see young birds on their own, out of the nest (and possibly looking distressed). This doesn't mean they are seriosuly at risk. Also, if you see a fledgling bird which is out of the nest, and try to pick it up / feed it yourself, this can actually cause the parents to neglect it, which could mean that it wouldn't learn to feed itself properly.
baby birds get adult mites from their parents in the nest
If it has fallen from the nest, she will not be able to rescue it. She's trying to encourage it to fly, which is the best she can do. You could capture it and place it in a tree or bush. That's about all you can do. (We are assuming it is, indeed, a fledgling, beginning to grow wing feathers. If it is not, all you can do is care for it yourself or find a caretaker such as a bird rescue center. We recommend the shelter.)
A bird's nest is called a "nest."
Innate.
duck - duckling swan - cygnet eagle - eagle hen - chick