I have a almost 1 yr old Cuckoo Maran and she was a great layer until a couple of weeks ago. Now she sits in the nesting box all day and all night but doesn't lay any eggs at all. The only time she comes out to eat or drink is if I make her. She acts funny when she is out of the box, scratching and rubbing her head and picking like she has mites or lice but I can't see any. I thought maybe she was just in a brooding phase (we have no rooster) but it has gone on too long and I am worried. The vent seems a little plugged up but it is hard to tell since she is very territorial about sitting and pecks me. Any ideas?