Cas laid another egg last night. This one much larger (like 50% bigger) and soft shelled, with some "spots" of shell.
I read that proper shell formation takes about 24 hours, so is the soft shell simply because it was laid roughly 10 hours after the first one?
Before confirmation of sex, Cas has been fed greens high in calcium anyway (kale, mustard greens, broccoli, etc), so I don't think it's a calcium issue? But I'm no expert! Although, now that I do know, I'm off to buy some oyster shell today too.
Any advice helps!