My 3 year old Black Australorp hen has lately been sitting around outside doing nothing. She has eaten very little - she ate a bit of the strawberries that I gave them all this morning, but so far I have not seen her eat anything else for a few days. I have not noticed much poo, but what I have seen is runny and brownish with no white. She is also losing weight - she had been a good sized hen, but now I can feel the exact out line of her breastbone. Her comb and wattles are a regular red. She is breathing normally, and makes her noise normally as well. (She's a noisy chicken. ) I've been thinking it might be worms. I searched "worms" but none of the topics had the same symptoms. Anyone have an idea what could be causing this? I'll have to treat her here at home, on account of there not being a vet around our area that treats chickens. None of the other hens are acting this way. What is it? Thanks in advance to all!