Bluebird BoxNest house $ 30Ideal bird house for nesting Tree Swallows and Eastern BluebirdsTo attract these birds:Mount the nest box on a post or pole 5 to 6 feet from the groundInstall a predator guard on the post (wrapping in metal stove pipe or metal flashing are easy options)Position near open fields, marshes, meadows, wooded swamps, or yards with mature trees and shrubsPlace the nest box far enough from trees and shrubs so squirrels cannot jump onto the box (6-8 ft), but close enough to provide a landing spot for young birds when first leaving the nest (10-50 ft)Less common users of this nest box include Chickadees and NuthatchesTo attract these birds:Mount on post, pole or in a tree 5 to 15 feet from the groundPlace approximately 1 inch of untreated wood shavings (not saw dust) in bottom of boxPosition near forest edges, meadows or in a yard with mature hardwood trees For best resultsPoint the opening of the nest box away from prevailing windsDo not paint or water-seal the inside or outside of the wood, toxic fumes will be given off that are harmful to birdsClean out the nest box each year once you are sure the young have left DimensionsExterior Dimensions:Base: 6.5″ wide x 5.25″ deep Height: 9.5″ at front and 11.75″ at rear Roof: 10″ wide x 11.25″ deepInterior Dimensions:5.25″ wide x 4″ deep x 8.25-10.25″ high