I was thinking about adding a couple of bushes to my run. My chickens don't free range and I like to make their run as close to free range as possible. I would love to add some bushes that have cover and they could lounge around under in the summer. I also want it to be something that will not hurt them, if they decide to nibble on it. My run is a good size, but still want to stick to a medium bush. Any suggestions would be appreciated.