First time hatcher with 5 Coturninx eggs. Today is day 14 so we took out the egg turner. I candled each egg but honestly I do not know what I am looking at. From what I have read it seems that I should not be able to see light through the egg if it is developing. If that's the case then I am not so sure any of these eggs are viable. BUT, while looking at the eggs laying in the incubator it looks like one of the eggs "vibrates" every now and then. It doesn't seem to be from the hum of the heater or fan. And it isn't my imagination because my son sees it too. Any ideas what's going on and what I need to do if anything?