The Second Coop I built out of old store shelving we bought at the flea market for $2 a piece old 4X4s make up the yard under the dirt is old farm fence to keep out predators old pvc used to hold the chicken wire up for the yard, the chickens have the ability to go beneath the coop for more yard area, We enclose all our coops due to the owls and hawks in our area has well we are an abused dog rescue and this protects the chickens from the dogs on property