After egg hatched how did the bird learn to fly and how did we learn to walk

Question

After egg hatched how did the bird learn to fly and how did we learn to walk

Answer 1

Instinct

Answer 2

There's variations from one species to the next.  It takes some birds longer than others.  Some birds learn by instinct, some by observing other birds fly, and in other cases, they need instruction by their parents.