My birds have poop that is light brown, almost yellow, off and on. Usually it's fully formed, sometimes it's liquidy. Is that a sign of worms? I thought it was maybe normal until I got some new birds about a month ago. They had full formed dark brown poop, until they joined the rest of my flock and started free ranging with them...now they have the lightbrown/dark yellow poops too. They are already on Sulmet for the suspected IB that's going through my flock. Is it alright to give them wormer too? What kind should I get? TSC is the closest store to me, and even that is a good drive. There is a petsmart close to me, if they sell anything for birds that might work. I have DE, but I'm not sure how much they would need to consume to fully worm them. I took frozen corn one day and and rolled it in DE and fed it to them, and they ate it up...I did notice that their poops returned to normal after that but now they are back to that funny color again. Any thoughts? Chicken keeping is way more complicated than I ever thought it would be.