Where can I download construction plans for predator guards?

Recent research using NestWatch data suggests that, on average, nests in boxes with predator guards had success rates 6.7% higher than nests in boxes without guards. And while all types of guards were correlated with improved nesting success, birds nesting in boxes with cone-type baffles, stovepipe baffles, or entrance hole extenders (also called “wooden block hole guards”) were most likely to result in successful nesting.

You can find construction plans for these guards at the bottom of our Dealing with Predators page. Click on the name of the guard type to open a PDF construction plan.