This is the first time Ive tried hatching eggs in an incubator. Out of four eggs, two were fertile. Its now day 23 one of my eggs pipped yesterday and has hatched today but the other one hasn't even pipped yet! The temp is about 99-100 degrees and humidity 70%. Ive candled the egg, its all dark (which I assume is the fully grown chick) with an air sac at the top. Is there anyway of telling whether it is dead or alive? I dont know what to do.