Protecting Birdhouses from Snakes with a Metal Cone

Snakes climbing 4x4 posts to raid birdhouses is a common tragedy. While a smooth metal pole is the best mount, you can retrofit existing wooden posts. Fashion a conical baffle from sheet metal, about 18 inches wide at the base, with the point facing downward. Secure it around the post. The slick, overhanging surface prevents snakes from gaining a grip and climbing past it.