Bluebirds add colour and music to your yard. Besides being cute, these birds suppress insects. How to attract and keep bluebirds in your yard: habitat enhancement, appropriate feeding, and strategic placement.
Offer mealworms in feeders. Living or dried mealworms can attract bluebirds and enhance their diet. Place the feeder near their nesting place but not too close to avoid disturbances.
Install predator guards on nesting box poles to keep squirrels, raccoons, and other animals out. Baffles and metal guards work.
Perches: Give bluebirds open perches or small trees to rest and survey. These offer a view of insects and hazards.