I have hatched eggs about 5 times now, coming up on my 6th time. We always candle the eggs to see who is alive and what not, etc. BUT!!!! Chicks do have heart beats, so I wonder what would happen if maybe the last two days or maybe on hatch day, late, you put a stethoscope on the egg and listen? Or maybe even 5 or 6 days? We should be able to hear something... right?