Hi there As you can see from my coop photo, to the left of coop i have Rhubarb growing. My hens will be let out to wonder around all the area in the photo. Rhubard leaves are poisonous What do i do ? Remove it ? Put up a sign saying keep off ? Or will they know all about Rhubarb & stay well away? Maybe Rhubarb leaves have no effect on Chickens ?