Our hatching eggs are sent by priority mail and will be sent fertilized and ready for your incubator. All eggs sent were laid the day of shipping or the day before. Your hatching eggs should be set within seven days of our shipping them. The ideal holding temperature before setting is 60 degrees. As incubation times vary due to the incubator temperature, we recommend placing the eggs in the incubator during the middle of the week if you are hatching these in a classroom. This way you are sure they will be hatching during the week and not over the weekend. Typically, 80% of the eggs you buy are fertile. We cannot guarantee that all the fertile eggs will hatch. That is entirely dependent on the incubator and we have no control over the quality or care of the incubator. We guarantee the eggs to be true to breed variety and to arrive in good condition. However, we do not guarantee hatchability due to conditions beyond our control during shipment, and hatching equipment or other methods used. It is important, to make sure your incubator is working and able to maintain a stable temperature before you order your hatching eggs.