I have an ex battery girl who is around 2 years for the last few days she has been moving very slowly, she still eats and drinks, and if I take treats out she still comes with the others, I have just noticed that she seems to have poop stuck to her vent, possibly blocking it, I have also noticed that her crop is empty, her comb is very dark and shriveled, I have her in a warm bath at the moment, please can anyone help me or give me advice