It's probably grasping at straws at this point, but I would get a new bag of feed, just in case. And I would scrub and bleach every feeder, waterer and roost in the place. It's just not worth taking any chances.
I wonder if your "helpers" gave the chickens any table scraps or garden waste. Most people think it's perfectly okay to give chickens leftovers, but they don't realize that they have to be fresh leftovers! Moldy tomatoes and potatoes just don't work. And lots of garden greens are toxic.
I wonder if your "helpers" gave the chickens any table scraps or garden waste. Most people think it's perfectly okay to give chickens leftovers, but they don't realize that they have to be fresh leftovers! Moldy tomatoes and potatoes just don't work. And lots of garden greens are toxic.