i'm watching my first try at incubating eggs start to crack. they pipped thru starting @9 pm last night. how long till they hatch. i can hear them chirp and yet so far there's just the one little hole. i'm not sure about the humidity (all the troughs in the bottom of the incubator are full) and whether there is enough to get them thru the hatch. my mom always got to this point and then would help them by breaking the shells for them. but, a lot died, so, i don't know. i don't know enough about the process. do i wait or do i help? how much humidity should there be? how long should it take fer a chick to actually hatch out?