Star of bethlehem just sprouting up and I caught the chickens eating it. I read it is very toxic. They seem to be doing fine so far, I dug out the plants, bulbs/roots, filled holes with new soil, and then covered the are where they were growing with an outdoor carpet, just to make sure they don't dig up any bits I may have missed. I gave the chickens some scratch to eat and they are acting normal so far, its only been 2 hours though. How long might it take for them to show signs of illness if they do get sick? Are they in the clear after the first few hours? they are orpington pullets 11 mo old