We are new to chickens and this year have bought our first 4 girls. They are 21 weeks old now, Rhode Island Reds but are not laying yet, although they are showing all the right signs. We have noticed that one of them, the slightly younger one, has had green diarrhoea for about a week. It has been very hot here, and always is during the summer, usually about 100 degrees and maybe it is that which makes her bad. The coop has lots of shade, fresh water etc and she has no other symptoms. All the hens are doing chickiny things, look good colors, healthy feathers, clear eyes and eating well. The question is ... should we be worried and if, so, what should we be doing? I looked for symptoms on the net and everything with green poo is serious BUT has other symptoms, of which she has none. Are we just being over-protective parents? Any suggestions greatly received.