Bluebird house &ndash; Gilbertson PVC nesting box &ndash; Also can be used as Chickadee House, Wren House, or Swallow bird house &ndash; North American Bluebird Society approved &ndash; Made in USA &ndash; Most sparrow resistant design available Attracts beautiful bluebirds like a magnet! Made in the U.S.A. of high quality cedar and PVC. Easy to clean and open for nest checks. Great for Chickadees, Wrens, Titmice, and Swallows too. Approved design by the North American Bluebird Society