The classic shape and sturdy, cedar body form this robust shelter, perfectly designed with bluebirds' needs in mind. A 1" thick predator guard surrounds the 1.5" diameter entry hole, creating a physical barrier for squirrels and raccoons. The extra wide, overhanging roof directs water away from the chamber, and gaps on the sides beneath it provide ventilation. Additional, small openings in the bottom corners drain any captured water, and the black tone of the roof contrasts the tan abode. A metal screen rests slightly above the wooden floor, preventing blowflies and other parasites from overtaking the nest, and the home is simple to place on a post, pole, or wall. One side panel lifts upward, at the end of the season for thorough cleaning. The thick, cedar body remains durable for many nesting cycles, and resists damage from water and insects naturally. Watch the nesting activities of bluebirds from a distance with this Cedar Bluebird House.
Opening: 1.5" dia.
Dimensions: 8"L x 7.5"W x 12"H
Mounting: pole or post mount
http://www.nabluebirdsociety.org/PDF/NABSFactsheetFAQs.pdf