Very difficult one this, do you or don't you help? . keep the temprature correct and maintain the higher humidity( don't keep opening up the incubator). if you can hear chirping then there is a live chick inside, however it does not mean this is definiely a strong healthy chick, or it might have got out already, onit's own. keep vigillant, if it is going to make it, it will start piping on it's own. however if the membrane has dried out a bit, it will be touger to break for the chick, and it might fail. if it starts to break through, keep watching, it may take hours and hours. if it is part way out it is tempting to help bit. sometimes it works sometimes it doesn't. if you do decide to help kep germs out of the incubator, and keep the heat and moisture in. good luck. don't be too upset if you fail, it has happened to all of us , ad will happen again.