One of my hens does this terrible screaming/screeching thing when she is upset in anyway (wants out of the run/wants treats/other). Her sister has done it a couple times while the other is already doing it, but none of my other hens do it. Why on earth is she doing this? I's SO SO SO loud, I may as well have a roo. I know she's a hen (she's laying). She's an EE if that has anything to do with it.