Birds, chicks, and bris milah[1]
כי יקרא קן-צפור לפניך בדרך וגו’ והאם רבצת על-האפרחים או על-הביצים לא-תקח האם על-הבנים: שלח תשלח את-האם ואת-הבנים תקח-לך למען ייטב לך והארכת ימים
When you chance upon a bird’s nest while on the way…and the mother is perched on her chicks or on her eggs, don’t take the mother upon the children. [Rather][2] send away the mother bird and take the children for yourself, in order to be good for you and that you’ll lengthen your days’[3]
A popular mitzvah nowadays is the mitzvah to send away the mother bird. Perhaps because of the Torah’s promise of a long life, people yearn for an opportunity to fulfill this mitzvah. The Torah tells us not to take the chicks or eggs when the mother bird is perched upon them. Rather, send away the mother bird, and then take the children for yourself.