Hi I have a hen that refuses to leave the nesting box, she hasn’t laid any eggs in a week and she steals other hens eggs. She chirps, growls, feathers up when I take her out to get some water and food. She eats, drinks hangs out for a little while with the flock, then back in she goes. She doesn’t have pasty butt and acts completely normal. Can someone tell me what’s going on? She’s my alpha hen... thank you.