Heath 4-Pk. 2 Piece Easy Clean PM Gourd Starling Resistant/RH

4-Pk. 2 Piece Easy Clean PM Gourd Starling Resistant/RH. Gourds are plastic. Entrance hole comes starling resistant with a perforated removable piece which converts the hole to a round shape. Once perforated piece is removed, it becomes permanently a round hole (cannot put the perforated piece back on once removed).