I had 8 eggs in my incubator and 7 of them have hatched. The last one looks to me like all of the others did before hatching, and wondered how long I should leave this one in the incubator. I candled it, and it has an air bubble at the top, but there's no peeping and I can't see anything moving in there. Lucky number 7 hatched yesterday at 3 pm, and since it's been 24 hours now, I dont know if I should give it more time or assume it's not going to hatch. Any advice? you all were very helpful when the others were hatching, so wanted to ask about this last one before I give up on it. Thanks.