Dont use the rectangular hole fencing for your chickens, yes they can get heads through and peck the fresh dirt but its dangerous for your animal. My chicken Peep was a Rhode Island Red rooster he had his head out side of the coop, through the holes eating and a racoon pulled his head off through the fence. So we put chicken wire around the bottom of the coop and now it hasnt happend again. And I forgot to say it was the first night we put them in there that this happened. RIP Peep. Please keep this from happening to your chickens.