I have a ten month old hen who has recently become very noisy. She is not currently laying after raising chicks this summer and now due to winter. She is totally healthy as far as I can tell and has access to the coop with two other hens and run all day and gets a few hours during daylight to free range in my large, fairly wild garden. She has been quite a talkative hen since she started laying earlier this year but now it has got to the point where she I bwaaaaark bwaark bwaarking all day and I'm worried about it annoying the neighbours! What could be causing this?