One of my speckeldys has taken to doing weird things with her neck, I can only describe it as being like bodypopping or something michael jackson might have done. she sort of moves her neck in a big circle, looks like she has a sore throat and can't swallow with it hurting BUT she is swallowing - eating normally, scratching around well, drinking, laying not looking miserable. the crop feels normal, looks normal, no bitter smells from her beak or any other symptoms.
any ideas what could be wrong?