Christmas gifts for Myself and the Birds

My dear daughter purchased these two bird houses for my Christmas gift. These are made out of recycled milk jugs and bottles. The small one took 30 milk jugs to make. I now have two new bluebird houses to get put up and the smaller one will be used by wrens or chickadees. In my shed are bird house gourds that I hope dry correctly and survive this terrible winter. If they don't I will just have to plant more. I vow no House Sparrows will occupy these houses.