I was going to reassure you that it's unlikely they would eat enough rhubarb to poison themselves (as in the other thread) but I've just realised that you're probably wanting to move the rhubarb to avoid the chickens from destroying it.
John
No, you're right, John. I was worried about them poisoning them selves because I lost 2 ex batts last week for no apparent reason and you wouldn't believe the size of the holes in the leaves. I'll move the rhubarb on Friday and won't let them out tomorrow, just in case.