(I know this is a duck question but I figured there could be similarities). I have just candeling my 22 Ancona duck eggs on day 24 and I noticed that when I would candeling a few of the eggs through the air sac they looked fine but if I canceled them through the opposite end that there would be a lot of light (and as far as I know, at this point in the incubation process there should be no light other than the air sac). Is it a problem that a few of the eggs have a lot more light coming through then others or are they just behind a day or two? Any advice appreciated!!