My husband and I decided to incubate some of our chicken's eggs (so exciting) so we did lots of research then went and got a still air incubator. we set our eggs 4 days ago and have been turning them 3 times a day. I candled them this evening and was thrilled to see a dark spot and some veining in all 6 eggs. However I'm a little concerned because the yolk is floating around in the egg. while candeling if I flip the egg over the yolk floats to the top of the egg! I cant find any info on this so I'm assuming it isnt normal. Everything I've read says that the air sac should stay at the large end of the egg and the embryo near the top. does anyone know whats going on here?