You might have a problem if new eggs are being layed in the nest with the other ones. You might mark the original eggs with a pencil and just take out any new ones each day, leaving the marked eggs to hatch. I would separate them after they hatch or else mom will be working overtime trying to protect them. Good luck, they are fun. It takes 3 weeks for most of them, but some might take a day extra, and some might be hatched a day early.
