My chicken, Grumpy, has always been a little grumpy, but for the last week she has been extra aggressive to anyone, including me, that tries to go into the roost. She will let one of the others in, but after she lays an egg, Grumpy kicks her out. She sits up there almost all day. I got her to come out this morning, she stayed out for a half hour and goes back in. I went to check for eggs, and she screached at me, and it sounded like a little kid screaching. Is she a broody?