One of my girls likes to take a looooooong time laying her egg. I mean like 2 hours. Lately, it's been more like 4 hours of her being on the nest. I know because I have a cam in the coop on the nesting boxes. Last night, before I went to bed I went out to check on them and found her in one of the nesting boxes. Normally she's roosting at night on the top bar with the other hen. I picked her up off the nesting box and placed her on the roost. There were a bunch of feather from her in the nesting box, I figured she's starting to shed her winter coat. Then she hopped down and went back into the box. So I took her out again and put something over the boxes so she didn't go in when I left, luckily she didn't over night. I also found some poop in the nesting box for the first time. She's a chocolate cuckoo orpington. I checked for mites/lice and didn't find anything. Is she getting ready to be broody? How do I prevent that?