fledge

verb

of a young bird, to acquire feathers large enough for flight
supply with feathers, make ready for flight
raise a baby bird until it can leave the nest, and metaphorical development extension

Wiktionary

Pronunciation: /flɛd͡ʒ/

adj

Etymology: From Middle English flegge, fligge, flygge, from Old English *flyċġe (“able to fly, fledged”) (attested in *unflyċġe, unfligge (“unfledged”)), from Proto-West Germanic *flugi, from Proto-Germanic *flugjaz (“able to fly, fledged”), from Proto-Indo-European *plewk- (“to run, flow, be swift, flee, fly”). Cognates From Proto-Germanic: Dutch vlug (“fledged, able to fly, nimble, swift”), Low German flügg (“fledged”), German flügge, German flücke (“fledged”), Icelandic fleygur (“able to fly, fledged”)

Feathered; furnished with feathers or wings; able to fly.
“his shoulders, fledge with wings”

verb

To care for a young bird until it is capable of flight.
To grow, cover or be covered with feathers.
To decorate with feathers.
To complete the last moult and become a winged adult insect.