How long do pet budgies grow?
It will depend if it is a baby or not. A hatchling will start to
get feather pins in a couple days after hatching. It will be fully
feathered in about a month. If your parakeet has molted, I
recommend buying a molting suppliment or molting diet seeds, it is
a very stressful time for a bird. These molted feathers will grow
back in depending on how well the bird is taken care of and the
size of the feather growing in. My quaker lost his tail feathers
and it took about a month for them to start sprouting back out. If
it is a non-flight feather or down feather it should grown in quite
quickly.