Wings Retreat Butterfly Barn Green - Attract and adorn your garden with beautiful butterflies using the Wings Retreat Green Butterfly Barn. Many of these captivating insects hibernate through the cold winter months, but they also require a refuge during summer rainstorms. Providing this home creates a place for butterflies to hide from predators, shelter from inclimate weather, and rest. The front panel of this shelter has three elongated, 0.375" wide slots mimicking crevices usually found in wood piles and bark that butterflies often use for shelter and protection. A pitched, lapped roof covers the roost, and a metal hanging loop on the backside of the house enables placement on a post or against a wall.