no. it would not be a problem to add the new one or two. I would suggest marking them with an indentifier so you know they should hatch a day or so later than the others.Question. Will it hurt to add 2 more eggs to the bator even though I set the rest of my eggs lastnight? I'm asking because my Colombian hen laid one this morning and was still sitting on it when I let them out of the coop. I want to put it in with the others, I know hers are fertile, she is one of my roos favorites. I have seen her breeding. Can someone please tell me if this will hurt or if its ok to add them now.