Your description is exactly what my bird is displaying. You are right, excitement about food causes the "fits" too. When she is calm and unstimulated, she is reasonably coordinated.
My girl is also in need of bath and I have been putting it off because I will need to take her home for it and it's a car journey or a bumpy walk across rough terrain and back. She does her best to poop over the edge of the nest but only succeeds some of the time, so she is a bit soiled now.
Having already had to cull one pullet with this, I'm enough of a realist to know that it may only be a matter of time, but whilst she is still fighting it and holding her own/improving slightly, I have to give her a chance. When the sun is shining and I am able to put her outside, she seems to still be reasonably confident around the other hens too and they don't seem to particularly bother her, but then I think free ranging helps a lot to prevent bullying.
My girl is also in need of bath and I have been putting it off because I will need to take her home for it and it's a car journey or a bumpy walk across rough terrain and back. She does her best to poop over the edge of the nest but only succeeds some of the time, so she is a bit soiled now.
Having already had to cull one pullet with this, I'm enough of a realist to know that it may only be a matter of time, but whilst she is still fighting it and holding her own/improving slightly, I have to give her a chance. When the sun is shining and I am able to put her outside, she seems to still be reasonably confident around the other hens too and they don't seem to particularly bother her, but then I think free ranging helps a lot to prevent bullying.