I have a 9 month old Silkie hen. She had been regularly laying 3-4 eggs per week until a few weeks ago. Now she is always found in a nesting box as if she is sitting on eggs, but she has not layed an egg in almost 4 weeks. She sometimes sits on eggs layed by my GLWs, but lately she is sitting on nothing. Although I have never seen her out of the nesting box, I am assuming she is eating and drinking since she still seems like herself. She is feisty and protective of her nest, she is vocal, alert, and not getting skinny or unhealthy looking. Since she suddenly stopped laying eggs, I am a bit concerned she might be egg bound, although she doesn't seem to be in any kind of distress. Why would she be nesting like this if there are no eggs under her? Could it have something to do with the Silkie rooster we adopted? We got him around New Years and her behavior seemed to start after his arrival. Or is the timing just a coincidence? These are my first chickens and I just want to make sure everything is okay with them and if this behavior is normal.