100.0% of buyers have recommended this.
The starling resistant entrance holes is a tried and proven method for helping to eliminate the pesky European Starling. Tests have shown the entry holes are 99.8% effective in achieving this. This hole is cut to an exact height restricting starling entry but allowing safe entry for the Purple Martin which gives it a greater sense of security. 4 Floor-12 room. Assembly Required. Door plugs sold separate
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