LOL, I was wondering the same thing. I rescued 6 adult hens, around the same time my pullets started laying. My pullets eggs are easy to identify, because they are small, and some of them are being laid on the coop floor, UGH!!! I do not think all of the hens are laying, though, because I am not getting enough eggs. The one EE is laying regularly, and now the other one started laying, two green eggs yesterday. I have 4 brown egg layers from the rescued group, and I only get one or two large brown eggs a day. Not sure who is not laying, but I am pretty sure the BR is not laying at all. I can kind of tell by egg color, and catching them in the box, that my RSL pullets and my BO pullets are laying. I have yet to catch any of my BR pullets in the box, and I know for a fact that my leghorn has not laid, because I have no white eggs. I am glad you asked this question, because I wonder how one would know that a chicken is egg bound when they have 18 of them????