I hope I didn't make a stupid mistake! I bought some Lavender Orpington and Marans chicks Friday. I met the seller in a parking lot and it was dark, they appeared healthy so I paid her and took them home. I haven't messed with them much,but when I was cleaning the brooder yesterday as I took them out, I turned them all upside down to check for pasty butt and noticed what appears to be black sores or red spots on the bottoms of their feet. Some looked black,so I tried to pull it off the foot of one, thinking it was old dried on poop, and when I pulled it off, it put a hole between the chick's toes! I brought home 20 chicks. The oldest hatched February 12 and the others are probably a week or so younger. The bottoms on some appear swollen, I can't pull the scabs off easily.I'm afraid to mess with them. They appear healthy.I would say about 2/3 have these type of sores. They were not on medicated feed,so I started them on that. Do you think they could have been on rough bedding or on dirty litter? Can chicks this young develope bumblefoot? Would the medicated feed help if there were staph? It contains Bacitracin Methylene Disalicylate. I am worried, they weren't cheap and I drove 300 miles round trip. Here are a few photos. These are 2 different chicks, Please ignore the dirty fingernail!