A DAY BEFORE YOM KIPUR, IT WAS CUSTOMARY TO SACRIFICE HENS AND ROOSTERS FOR ALL THE FAMILY MEMBERS, A HEN FOR FEMALE AND A ROOSTER FOR A MALE.
FOR A PREGNANT WOMAN WHOSE EMBRYO'S GENDER WAS NOT KNOWN, THEY USED TO SACRIFICE TWO HENS AND ONE ROOSTER. A HEN FOR THE MOTHER-TO-BE AND A ROOSTER AND A HEN FOR THE EMBRYO.