Bird House entry hole is too big and sparrows can get in.
I wish that the entry way hole to these houses would be Wren or Chickadee sized, instead of big enough for Sparrows to get into it. Keeps you busy just emptying out the Sparrow nests every week. And with them hanging around that house, the Wrens don't come near. The hole should be 1 inch for Wrens to 1 1/8th inch for Chickadees. So the 1 1/8 inch is perfect for both Wrens and Chickadees. But these houses have 1 1/4" holes, so are sparrow sized. I bought the Sunflower house and it's beautiful, if it would have has the correct size bird house hole. That's why the 4-star rating.