形容詞 precocial:

1. (of hatchlings) covered with down and having eyes open; capable of leaving the nest within a few days

pre.co.cial

adj.（形容詞）
Covered with down and capable of moving about when hatched. Used of wading birds and domestic fowl.
早成性的：剛孵出便覆有絨毛并能行走的。用于涉禽和家禽

來源：
From New Latin Praecocôs [precocial birds]
源自 現(xiàn)代拉丁語 Praecocôs [出生便能獨(dú)立活動(dòng)的鳥]
from Latin [pl. of] praecox [premature] * see precocious
源自 拉丁語 [] praecox的復(fù)數(shù) [早熟的] *參見 precocious