One of my Girls, Harriette, an 19 week old Barred Rock was dust bathing today and started making on odd noise. Now I've heard them all make strange noises while dust bathing ~ cooing, burbling and other expressions of ecstacy, but this was different. Every once in a while she would make a short squeak, very much like the sound you hear when you step on a squeaky toy! This continued even after she shook of the dust and tried to take a nap. Every couple of minutes she would squeak and look annoyed because it woke her up. I offered her some water, but she wasn't interested. The squeaking did stop eventually. Hiccups do you think?