Bird Feeder & Hangers
Last updated 45 weeks ago
Bluebird 2-Hole Mansion, designed by Linda Violett --- This is a Defensible box. Adult bluebirds escape out the second hole and take battles outside the box where they consistently outcompete House Sparrows. This is the only box style that has proven to tip the advantage to Bluebirds over House Sparrows at no-trap, no-gadget test sites if standard guidelines are followed.