fledge

verbs

feed, care for, and rear young birds for flight
fledge
is a type of (narrower)
bring up
"raise a family"; "bring up children"
bring up, nurture, parent, raise, rear
decorate with feathers
"fledge an arrow"
fledge, flight
grow feathers
"The young sparrows are fledging already"
feather, fledge