NABS Blubird Nest Box
This North American Bluebird Society box has been the standard nest box on bluebird trails for years. Although other boxes have surpassed it's performance for sparrow control, it remains a staple on most trails. Constructed from 3/4 inch weather resistant cedar with zinc plated hardware. Opens easily for monitoring and cleaning. Mounts on any 1/2 inch O/D pole or order the BB-POLE for quick and easy installation. Weight: 5lb.