Question about abnormal eggs

[FiveHens]

So, I have a question: We have four hens who have been laying since the spring of 2010. In their entire laying careers, we've only ever had three "mistakes:" Two eggs laid while they were asleep and one tiny egg with a super-thick shell. Now, this this past week alone, they've laid one tiny egg, one tiny egg while asleep, and one"soft-shell" egg in their run, which I've never seen. I know they're getting a little old for layers, but they're on normal food, have oyster shell and grit and everything. So, do you think they're just old, or could there be something weird going on precipitating this change? They're also not laying that many normal eggs. They get lots of table scraps, but nothing unusual this week, I don't think. Thanks!

 

[galanie]

Maybe they're getting ready to molt or something? Not sure, just a guess.