It sounds to me that your humdity was too low it should be at about 70 to 80 i think but other than that (and i dont mean this as a put down at all) but it seems like you might have bad genetics within your flock, maybe some bad...
Its day19 on the verge of 20 and my bantie egg has pipped and I can hear it peeping inside the egg! its my first bath that has made it this far! im so excited! God is such a miracle creator putting a whole chicken inside of a teeny...
they're so cute! especially your little grey one! If I had to guess right off the bat, I'd say a muscovy but magpies have splashed feet too :) a good way to find out if you want further clarification would be to go to hatchery sites...
If you have a lot of hawks I would put something on the top for now to keep them away from the babies :) And depending on what kind of ducks you have you should have a top on to keep the flyers from escaping haha. The electric wire...