i think i see bloodrings. Which is when the embryo dies and the bloodcells move to the outsides of the yolk and form rings. But keep them in the bator for another 5 days to make sureHere is a picture of the "weird eggs" that we saw today when candling. What are your thoughts? The spots are not moving.View attachment 2012142View attachment 2012143
As for the one with the crack, if it looks healthy to you you can seal the crack with non toxic glue like white silicone. Just cover the crack if you cover too much shell the egg wont be able to exchange gasses properly