Dipsy, I am no specialist so take my comment for what it is worth, which is exactly what you are being charged for it, nuttin. This chart comes from a Hatchery. the eggs are gathered from various places, trucked, or even flown to the hatchery etc. carted around and handled by various people. basically non of this is done with tender loving care. so the eggs have most likely been bumped and jostled to some degree. So just like shipped eggs they need anywhere from several hours to a day or more to just set pointed end down and allow the yolk to return to the middle of the egg and everything to basically settle back into place. nothing much happens int he egg until it reaches some temperature, I am not exactly sure just what temperature that is but I guess it is in the high 90 degrees. then all the Genetic soup switches on and chick begins to grow. once that happens nothing can stop it without resulting in the death of the embryo. Egg parts still moving around once the soup starts to activate can cause the embryo to fail. At best that is my imagined explanation of why it is important to have adequate settling time for the egg. as far as what time is adequate. I have read anything from 6 to 7 hours to 24 hours from various sources. Just another of those things you have to try and try again until you find what works best for you.
