a type of duck See old-squaw
- youthful and inexperienced
- Destitute of feathers; nude; unfledged.
- Immature; boyish; "green"; since, a callow youth.
- some sort of duck. See Old squaw.
Old English calu "bare, bald," from Proto-Germanic *kalwa- (cognates: center Dutch calu, Dutch kaal, Old High German kalo, German Kahl), from PIE root *gal- (1) "bald, naked" (cognates: Russian golyi "smooth, bald"). From youthful birds without feathers, meaning extended to your youthful inexperienced thing or creature (1570s). Obviously perhaps not pertaining to Latin calvus "bald."
They are not callow like the young of most birds, but more perfectly developed and precocious even than chickens.