Do you have fake eggs in the nest box? You can get fake eggs that look and feel just like real ones. If you have brown egg layers get white eggs and if you have white egg layers get brown eggs. Either that or mark them. That way you won't try to make an omelet out of a fake egg like I once did.
I have some comments about fake eggs. You can get some that look and feel just like real eggs. You can get brown ones or white ones. If you get these, get brown eggs if you have white egg layers and white ones if you have brown egg layers. I didn't do that and I tried to make an omelet out of...