Hi, my chickens are almost 7 months old and I have started noticing very loose stools and some brownish stools. They get their layer feed, because all of them are now laying, and they get clean water every day and at about noon I give them a scattering of the five grain feed, then about 4 o’clock I give them a treat of Romain lettuce with some shredded carrots and some cut up cucumbers and some meal worms that have beetles and flies in it. I bought a bag of that from tractor supply..... They love meal worms, and I just thought that this would give them extra protein with the beetles and the flies in it. Could this possibly be what is causing their loose stools.