I didn't tap on mine, I couldn't take out her eggs if I wanted to by that point. But the one in the bator will chirp from day 19 until born. As far as the eggshells go, I left them unless they were easy to pick up. Then when she was all done and had left the nest I cleaned up the remaining shells.Moved my silkie into a kiddie pool so that they would all have a bit more room. She seems alot happier in there... maybe I should have had her in that all along. I had to bring in a hen with a sour crop last night and just the sight of her made my silkie FLIP OUT. It was crazy. I had to quickly cover her up. Its so interesting though because she doesnt make that sound when our dogs come around her. She is getting up more than she used to to eat and drink, not sure if its because her eggs are almost done and she doesnt need to tend to them as much??
Anyway I was just curious as to when you can tap on the egg and get a peep back... not sure if my silkie mama will let me get one to check, but it would be neat.
Also what do you do with the shells? Does the mama get rid of them, or do you just take them out?