I am on my second round of chicks, using a new brooder box. We have 5, 10 day old chicks and 2, 3 day old chicks together. However, at least 2 of the 10 day olds have watery poop...pretty consistently. All of these chicks have been vaccinated for Mareks and are on medicated starter. They are eating and drinking well; running all over the place. It is hot here, so I have moved the brooder outside where they can access the ground if they want. I don't think they are too hot. They are shaded and are enjoying pecking about. I fed some cooked oatmeal this morning. What other tricks should I do or should I not be worried?