I have four chickens and one (a white sussex) has been acting a little strange and I think she might be sick. She hasn't been perching herself the last few nights and today I noticed she had a little bit of green excrement stuck to her rear. She has been eating and acting normal during the day. Tonight I felt her crop and it felt really full and none of the other chickens had crops as full as hers. All of our chickens have been molting the last few months so none of them have been laying eggs. I'm really concerned and I'm thinking about taking her to the vet on Friday but if anybody thinks this is serious then I will take her tomorrow. Thanks.