of birds, "bearing young which are helpless at birth," 1920, from Modern Latin Nidicolae (1894), from Latin nidus (see nest (n.)) + colere "to inhabit" (see colony). Contrasted to nidifugous birds (1902), whose young are well-developed and leave the nest at birth (from Latin fugere "to flee").[nidicolous etymology, nidicolous origin, 英语词源]