Strange pooh

Hello! I just went to clean out the coop, and  last night one of the hens has done a very pale but with bright green pooh, it was also very small and spiralled, the green was more like puss ( hope no-one is eating) and not grass etc. One hen doesn't look herself she is puffed up, I assumed she was about to lay a softie because she acts like this when she does, she is eating fine, I don't know it might not be her, I am going to worm them tomorrow any other ideas?