Oh and should I set them at night or in the morning? What makes more sense at the end? Thank you all so much for your quick responses. I have a Pekin who decided to sit some eggs....She is very diligent, but, 2 others have also decided to sit with her. The problem is they break the eggs. John Metzer said I could pull them and put them in the bator and just clean it out after, etc. HOwever, when I just got my first candler and went out to get them, I am so confused....I brought out pictures of every day and what they should look like and I am wondering if the candler is not showing me the blood vessel streaks. They are definately all moving along and I find it hard to believe that they would ALL BE DEAD AND lacking vessels and one even feels heavier than the others...like it is really far along. I don't know how to process what I saw. There was an air sac in each and there was definately an "embryo" in each one...one was almost black at one end...if you turned one or two of them, you could see the sac, and the embryo and then, on the other side of the egg, it was translucent. I am trying so hard to figure this out. I would like to just let her do it, but, I fear that they will destroy them by accident and I can't bear to go find an almost cooked duckling that died needlessly....but, don't want anything to explode like you were all telling me...that sounds AWFUL! Thanks again for answering so quickly! Sorry to add in an additional question, but, I was going to put it in the first one and forgot (the set at night or in the morning question).