Colorado: flickers (woodpeckers) do a lot of damage. Here’s photos of patched and existing holes from nesting activity. When I bagan the exterior inspection I discovered speakers in the bushes playing loud, desperate sounds of flickers being eaten by cats. Pellet gun in garage.
This solution works often:
Place birdhouse designed for flickers (or whatever bird is drilling holes in the exterior walls) directly over the existing hole and the offending bird will use the birdhouse and stop drilling.