(n.) A young bird with newly acquired flight feathers; an inexperienced person; as, a fledgling entrepreneur\.

Young Turk abecedarian adolescent alphabetarian apprentice arriviste articled clerk at half cock avifauna baby baby bird beginner bird bird of Jove bird of Juno bird of Minerva bird of night bird of passage bird of prey birdie birdlife birdling birdy boot boy bright young man bub bubba buck bud buddy cage bird calf callow catechumen catling chick chickling chicky colt comer cub cygnet deb debutant dewy diving bird dogie dove duckling eagle eaglet entrant ever-new evergreen fawn fellow firsthand fish-eating bird flightless bird foal fowl fresh freshman fruit-eating bird fryer fulmar game bird gosling green greenhorn greeny half-baked half-cocked half-grown hobbledehoy hopeful ignoramus ill-digested immature impubic inductee infant initiate insect-eating bird intact junior juvenal juvenile kid kit kitten lad laddie lamb lambkin learner litter maiden maidenly manchild master migrant migratory bird minor modern modern generation modern man modernist modernizer muchacho neologism neologist neology neonate neophyte neoteric neoterism neoterist nest nestling new new boy new generation new man newcomer nouveau riche novice novitiate novus homo original oscine bird owl parvenu passerine bird peacock peafowl peahen perching bird pigeon piglet pigling polliwog postulant pristine probationer probationist pubescent pullet pup puppy ratite raw raw recruit recruit rising generation rookie sapling schoolboy sea bird seed-eating bird sempervirent shoat shore bird slip songbird sonny sonny boy sprig squab storm petrel stormy petrel stripling swan tadpole teenager teener teenybopper tenderfoot trainee tyro unbeaten underripe undeveloped unfledged unmellowed unripe unseasoned untouched untried untrodden unused upstart vernal virgin virginal wading bird warbler water bird waterfowl weaner whelp wildfowl yeanling young young hopeful young man young person younger youngest youngling youngster youth