the.com/fledgling

means A young bird just grown enough to fly, or by extension any person, organization, or venture that's new and not yet fully capable.

from From 'fledge,' meaning to grow the feathers needed for flight, which traces back to an Old English root related to feathers and flying (a cousin of 'fly' and the old 'flicce'). The '-ling' is the same diminutive tag you see in 'duckling' and 'darling' — a small, often endearing version of the thing. So a fledgling is, quite literally, a little freshly-feathered creature; the metaphor for human beginners came later, once people noticed how much we resemble wobbly nestlings.