i have been wondering about runny egg whites and a few eggs with very thin shells. All of my 6 buff orpington hens are 15 mo. old and I get 3 to 6 eggs every day. They free range in a small yard. They are fed a high quality feed with oyster shell in it and also have free access to oyster shell in a separate dish. They get a few small scoops of scratch scattered in my small mostly bricked city backyard. I also give them greens from the grocery and bread before bed. Some occasional fruit and kitchen leftovers which I check for on a list of people foods safe for chicks. Water is always available from 3 sources. I have no idea at this point of what to try next. The temperature has been in the 90s and will be until September. I have fans running inside their house and in the yard but it just circs the hot air. Is it the weather or what?