Kettle Moraine Cedar Replacement Predator Guard for Eastern Bluebird Houses 1 1/2" opening

Kettle Moraine Replacement Predator Guard with Copper Portal for Eastern Bluebird Houses 1 1/2" Opening

Nature's Way Bird Products CWH3 Cedar Bluebird Box House, 12'' X 7.5'' X 8.125'', Dark Wood

Kettle Moraine Copper Portal for Bird Houses 1 1/4" Opening - Predator Guard

Kettle Moraine Copper Portal for Bird Houses 1" Opening - Predator Guard

Audubon Entities, Inc. Bird Guardian Birdhouse Protector

Universal Pole Kit, Great for bird houses and bird

Kettle Moraine Cedar Hanging Bluebird Mealworm Feeder

C&S Bluebird Nuggets

Audubon Coppertop Cedar Wood Bluebird House Model NACOPBB

The Bluebird Book: The Complete Guide to Attracting Bluebirds (A Stokes Backyard Nature Book)