Deuteronomy 22:6-7

6If a bird’s nest shall chance to be before thee in the way on any tree, or on the ground, whether with young ones, or eggs, and the dam sitting upon the young, or upon the eggs, thou shalt not take the dam with the young: 7But thou shalt surely let the dam go, and take the young to thee; that it may be well with thee, and that thou mayest prolong thy days.