Thoreau writes in his journal:
Going up Pine Hill, disturbed a partridge and her brood. She ran in deshabille directly to me, within four feet, while her young, not larger than a chicken just hatched, dispersed, flying along a foot or two from the ground, just over the bushes, for a rod or two. The mother kept close at hand to attract my attention, and mewed and clucked and made a noise as when a hawk is in sight. She stepped about and held her head above the hushes and clucked just like a hen. What a remarkable instinct that which keeps the young so silent and prevents their peeping and betraying themselves! The wild bird will run almost any risk to save her young. The young, I believe, make a fine sound at first in dispersing, something like a cherry-bird.