Once you feed it to them you will NEVER be able to eat corn on the cob around them again. They will surround you staring and drooling until you drop the corn and run for your life.
we were at the zoo yesterday and they had a cob of corn screwed into an eye bolt thing and hung by a chain. Looked pretty smart. I didn't get to see the chickens eating it because the kernels were all gone - I wonder how much it swings around when they are trying to eat it.