One of the pens.
As part of his art installation the birds will move around the green grass. The pens are honeycomb shaped, here is what the artist, Fritz Horstman, writes about his design:
"I'm going to have two small versions of chicken tractors moving around MICA's front yard. They are each hexagonal, so the pattern that will develop will be vaguely honeycomb-like. Each hexagon-coop will have two chickens in residence. Over the course of about two weeks I'll move them every two or three days, and so will have a total of approximately twelve marks made."
So 4 of our hens will spend the next few weeks in the city. Hope they don't cop an attitude when they return to the boonies..