Deuteronomy 22:6-7

If a bird's nest chance to be before thee in the way in any tree, or on the ground, {whether they be} young ones, or eggs, and the dam sitting upon the young, or upon the eggs, thou shalt not take the dam with the young: {But} thou shalt in any wise let the dam go, and take the young to thee; that it may be well with thee, and {that} thou mayest prolong {thy} days.