Nope..it's the same hen. I've been giving her extra calcium for awhile now, for the soft shelled egg issue, but maybe I should stop now that she seems to have stopped that as well?
I figured for now, it's only been three good days, so too early yet to tell what exactly is going on, or if she is actually recovering.
I have four hens, and she is lowest in the pecking order, but not so much that any of the others are keeping her from feed. I have observed her in the feeder, so she is eating the feed.
And you are right, I don't know exactly how much pine shavings she is eating. They don't do a very good job of logging their eating habits and daily food consumption.
There are two feeding stations in the run, and the layer feed is available all all the time, free choice. Along with that, they have free choice grit and oyster shell also available.