Help what does it mean?

[dieselgrl48]

If I buy shipped egg's.I alway's candle them before Puttin in bator.Sometimes a small ding can be fixed with wax or something.I candle chicken egg's again around 12-14 day's Duck 15-18 day's.I learned my lesson by having 2 turkey egg's explode in my Sportsman PHEW!Bad egg's can start fuming early, if they have a yellow goop spot or very moist on outside take it out.

 

[Fairybee]

i also checked my goose eggs while i was candling the new eggs both sets the eggs look good i can only see a very small amount of light through one a little more through number 2 but number 3 has me concerned it seems to have an over large air sac have pictured all three

http://www.flickr.com/photos/49114290@N06/4504050842/

number 1 best egg (Chuck)

http://www.flickr.com/photos/49114290@N06/4504046060/

number 2 second best (Randy)

http://www.flickr.com/photos/49114290@N06/4503419249/

number 3 (Pete) overlarge air sac obvious in the picture but also the large shadow what do people think?
im thinking maybe the chick was growing but has died but as its my first hatch i dont trust my own judgement and my friend who Kara who does the silkies cannot be sure as she hasnt ever done geese but we read up saying they lay there eggs over a couple of days so o=could it just be a later egg?
need some expert advice on this one they are Embden goose eggs

(My god daughter chose to name them by the way not my idea)