I have just read through all 65 pages of this thread. Wow, so much wonderful info. Thanks to SilkieChicken and all who have contributed over the years.
I bought eggs (for several different breeds) and had them shipped in since I don't have a productive rooster. I put 17 eggs under a broody hen (Louise), and 5 in the incubator. I candled the bator eggs on day 7 and made some notes, noting 1 was probably good, 1 was probably bad, and 3 iffy's. I decided to candle again last night on day 10, and thanks to the education here, I was able to determine one was definitely bad. Pulled it out. Saw movement in two of the remaining eggs. Talk about FREAKKY!! Loved seeing it. I want to keep candling. But the funny thing was today, I happen to witness Louise leave the nest, and I saw something white come off of her, as she (a black australorp) got to the outside run (about 20-30 ft from the nest). I didn't have the right shoes on to go into the run and check, but it sort of looked like an egg. When I got back home, I was able to inspect it, and sure enough, she had carried one of the nest eggs out of the nest, presumably under a wing, for quite a distance. When I looked at it, and did an eggtopsy on it and the one I pulled from the incubator, it turned out they were of the same breed, and both had black gooey blobs in the eggs. Turns out Louise is able to keep her nest clean (Mother Nature is so awesome!), and I am too thanks to the help from all of you. Louise's chicks are due on 11/7 and mine on 11/9. I'm figuring Louise will have a better hatch rate than I will. Hoping that I get several hens out of all of these. Because they were shipped, I'm expecting a lower hatch rate anyway. CAN.NOT.WAIT.FOR.ALL.OF.THE.CHICKS.!!!