Hello all - we have a small flock (7 hens) who are about a year old. These are our first chickens ever. Fortunately we've had a really good year with all seven chicks growing into healthy layers....until.... Just the other day one of our hens wouldn't come out of a nesting box all day, wouldn't go out in the run, etc. Since yesterday she's been sitting on the floor in a corner of the coop. I sort of nudged her aside today (she was not happy about it) and there were five eggs (??) under her. She seems like she's collecting the eggs and nesting on top of all of them?? I guess I'm mostly concerned and confused because she's never done anything like this before, and she' usually a very social bird. But for the last couple of days she wants nothing to do with moving from that spot. Oh, and I took the eggs out from under her and she sort of (sadly) starting clucking around and looking in the nesting boxes for them. Oh, and one more thing...it seems (but this might just be my paranoia) that her eggs are coming out with thinner shells than I'm used to. Not sure if she's sick or just exhibiting some bizarre new behavior! But I don't know what to do! Any advice?