So my oldest pullet, Sunshine has had a raspy voice for quite a while (weeks). I think it's fine,but I want to know what you think. She eats, drinks, plays, and poops properly. I have two younger pullets* that squeak smooth little squeaks:P (*9 weeks). I never really thought anything of it, but I recently looked it up and got a little scared at what I saw . She still talks a lot, it just sounds a bit raspy or hoarse. I don't know if it's just her voice or if something's going wrong . I can post a video tomorrow if that helps.
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Not sure I can help you. How do you know she lost her voice? Are you sure she did? Sometimes hens are pretty quiet.
I think you did the right thing bringing her inside. I think sometimes less is more with chickens. I would advise posting your own thread with the subject line Hen lost her voice. You may get more help that way than using a thread called Raspy Voice.
Let us know what happens