Egg question.

[Momtezuma Tuatara]

One of the shavers (and I don't know which), particularly after being in the compost bin, or eating lots of crickets and live creepies and crawlies, drops her egg from the perch, or lays in the nest... with no shell on it, just a membrane, or incomplete thin shell.... it's becoming more frequent.

They have plenty of shell and other sources of calcium and stuff, so I'm wondering why. The others scrabble around just as much but don't do the same thing.

Any thoughts?

[Seaweed]

Sometimes when chooks are coming to the end of laying for the season & starting to moult they throw irregular eggs. You can even get tiny ones with just a yolk or just a white. I have one chook who is very prone to funny things like that.