I had the worst time hatching Muscovies. Last year, I got a batch all the way to hatching day, and they all died- fully formed without hatching. This year, I have broody muscovies I went out to check on Mama Muscovy- to see if we have any hatched yet - and she has been a wonderful broody. Hasnt left her nest. I went out there, and she has an egg with duckling in her beak and she is shaking it, biting the egg, throwing it around. I sort of freaked. just a little bit. I took the egg from her, and helped the poor ducklings head out- and tried to put the entire thing back under her- and just wait and see. If she grabbed the baby, I was going to take the whole batch inside. (which I really do not want to do. She is a Muscovy- great mother, right?) Well, she grabbed the egg and took off across the yard. She dropped the shell by the water dish and ran back. By then, I had time to see that there are a whole bunch of pips in the rest of the eggs, and I tucked the new baby in between two eggs. So far, she is sitting on the nest- but not on the baby. She didnt grab it to hurt it, so I am leaving her alone. I dont want to stress her out by being close by. So, apparently, the secret to a successful hatch is to violently tear egg apart and shake the new babies out. Thats where I messed up last year using an incubator.