Protecting Bluebird Houses from Snakes: Build a Metal Cone Baffle

Stop Snakes from Raiding Bluebird Nests

Snakes are excellent climbers and can easily scale 4x4 wooden posts to reach bluebird houses. The most effective solution is a sheet metal predator guard (baffle) that prevents them from gaining a grip.

How to Make a Cone Baffle

1. Cut a circle of 24–26 gauge sheet metal (18-inch diameter).
2. Cut a slit to the center, overlap edges to form a cone with a 3–4 inch opening at the top.
3. Secure with screws or rivets.
4. Mount the cone on the post below the birdhouse, wide end down, with the top fitting snugly around the post.

The smooth, sloping metal prevents snakes from climbing past it. Ensure the baffle is at least 4 feet off the ground and the birdhouse is mounted on a separate pole or the same post above the baffle.

Alternative Resources

• Bird Conservation Predator Guards
• NCSU Snake Guards