I have 4 healthy but ugly looking brand new ducklings!! How exciting its my first hatch! However, there are still 9 eggs left in the bator. Some have some discoloring to them (looks bruised) and I have not seen movement but try not to mess with them too much either......Any idea why they are discolored? Today is day 27 and there arent any indications there is live animals in there.....don't want them to blow up in the bator....what should I do?