S and K Multi Gourd

What type of bird would I like to attract to my yard Purple Martins, Blue Birds, Tree Swallows Well, the BO9, can attract all three. Simply choose the provided entrance and you are set. The standard Starling Resistant Entrance is made for Purple Martins, but you can use the provided entrance to switch over at any time. Simply use S&K Gourd Rack 6 (GR6), to hang 6 BO9's, under your purple martin house. Providing choices for your martins is a very wise idea.