Fledgling
Part of speech: noun
Definition: A young bird which has just developed its flight feathers (notably wings). An immature, naïve and/or inexperienced person.
Part of speech: adjective
Definition: untried or inexperienced
Fledged
Part of speech: verb
Definition: To care for a young bird until it is capable of flight.
Part of speech: adjective
Definition: Able to fly.