Predator GuardA few of the bluebird nestboxes at Tanglewood Park have been modified with a 3" plastic tube at the box entry or with a 6" PVC pipe covering the mounting post (or both). The plastic tube at the entry is intended to reduce predation by preventing a predator such as a raccoon or feral cat from bending its foreleg when reaching into the interior of the box, thus preventing the animal from "raking out" the contents. The PVC pipe covering the mounting post is by its nature slippery, and due to its diameter, difficult to grasp by climbing animals such as raccoons, cats and squirrels thus discouraging a climb to the nextbox entry.

Bluebird Information