Hi. I have a hen that's been making a strange sounding call. Not like the usual egg song I hear. It's as loud, but it sounds like, "waaah, waaah, waaah"! Almost sounds like a peacock but not as high pitched. There's no bawking in between. Can anyone tell me what it might mean? She's been doing it everyday since her sister went broody, and now there are chicks in the coop she can't get to. Might that have something to do with it? She's always been my loudest hen.