"The old fence formed a rectangular Chicken Yard. Mr. M----- gave me some chicken wire and posts one day.
So I enlarged the Chicken Yard..."
"The New Fence Encircled Piles of Junk. Under the Junk were Stones.
When Arthur Judson fed his chickens, he would put the pans of feed on the stones. The chickens began the excavation by scratching the ground, pecking for food."
I guess from 1700 and something on, it was easier to dump trash on piles of stone rather than move the piles of stones and then dump trash.
Within a few years, working from sun-up to sun down, seven days a week, the Chicken Archaeologists had uncovered ancient mounds and a composite sculpture of a turtle..."