Hey everyone, Yesterday I got another call duck egg out in the barn, so when I brought it in, upon having it warmed up to room temp and candling to check for cracks, I noticed that the shell of this egg looks different from the others I have gotten...seems like it has more texture (pattern, whirls, mottling). In other words, it seemed thicker than the others I have gotten. Have any of you noticed differences in your eggs' shells as you approach spring? Could my ducks be starting to take in more calcium now (which they seem to be doing, digging into the limestone) and thus, the egg shells are thickening up in preparation for the breeding season? I think this is what is happening but I wanted to see what other people experience, and with chickens and other fowl as well as ducks.