Let me start by saying that I have one tough as nails husband. This guy is a Marine with over 20 years in the service. He can stop you in your tracks with one look. Seriously I've seen Marines scramble out of the way when the husband is headed in their direction. That said. I found this man playing a you tube video of newly hatched chicks chirping outside our incubator this morning. He was laying on the floor, playing the chirping and watching through the viewing window (I love this man dearly). So, I know I read somewhere that perhaps chicks hearing other chicks during the hatch process is encouraging. Could the same be said for chicks not hatching, but that should be hatching soon would also be encouraged by this? LOL I'm not sure if there is a way to even determine either case, but I just want to know if anyone does this (besides my hubs) and if they personally have felt it to be successful or helpful.