A while back I made a couple bluebird boxes, but when my Dad had seen them he said the hole for the bird to go threw was to large (should have done my homework) and that other pesty birds would get into them instead of the targeted blue birds. How would a wood turner handle this problem. I'll let the picture speak, and as you can see, we have happily nesting "Western Bluebirds" building a home! Looks stupid but they don't seem to care at all.
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