I candled all three again today. 
		
		
	
	
 VERY dark... all 3 are full where you can only see the airsack on the fat end, and random bits of light here and there until the duckling moves. 
Again, #3 concerns me. :|
(Something about #3 since the beginning... but its full and dark... and the chickens sit on it still, no one is kicking it out and rejecting it.)
Now the airsack seems to have gotten larger and has spread over onto the side of the egg. It still covers the fat end, but it down slopes up the side to make it larger then its been previously. There appears to be less room for this duckling inside the egg as there is in the other 2 eggs that seem perfect. 
When I move the eggs the inside sloshes around really easily compared to the other 2 as well. I think it even had a musty smell to it compared to the other 2... again my husband tells me I'm imagining things... they all smell the same to him.
Am I just being weird about this? Maybe I should start taking bets on whether or not #3 will hatch. I'm doubting it greatly... though it has proven me wrong and grown this whole time... I still don't have faith in getting 3 ducklings on monday.