Right-side short-tailed-bird radical, depicting a small bird in profile. Anchors
雏 as a young bird - chick, nestling, fledgling. From the literal sense came the metaphor
雏形 (rudimentary form) and
雏儿 (rookie). Same bird family:
雀 (sparrow),
雁 (wild goose),
集 (flock gathered on a tree).