I put 6 swan eggs in the incubator the Monday after Easter. The floods were getting ready to take the nest and they were given to me. The day after they took them, the nest washed away.. whew... just in time. They have been rocking for a few days.... and started "cheeping" last night.. anyone know how long before they should hatch after they start cheeping? still spraying them 3 times a day, but not turning. this sound correct?