Bluebird house predator guards are tools that help prevent predators from entering a nest box. Three common predator guards are baffles, Noel guards, and hole extenders. Additionally, bluebird landlords may install other devices to prevent competing birds from evicting nestling bluebirds. After decades of research and experimentation, bluebirders have tested multiple types of predator guards … Continue reading What is a Bluebird House Predator Guard and what types are there?