Welcome to BYC. Glad you decided to join our flock. X4 on candling. A stethoscope is designed to be used on large, flat surfaces (like the human chest and back) and will not work on the tightly curved surface of a small egg. Please feel free to ask any other questions you may have. We are here to help in any way we can. Good luck with your flock.I'm raising a chicken egg and today is it's 23rd day do you know if I can use a stethoscope to see if I hear movement or some sort of sound ?