How to inspect a house for pigeon entry holes
Inspecting your home for holes should be a regular part of your routine, even if you aren't focused on pigeon control. A number of nuisance animals can invade your space if there is an opening in the exterior of your building, so your first lesson is: never take any hole for granted. Pigeon entry holes, however, are going to be slightly larger than, say, the hole a mouse can use to get inside. These openings will likely be in the upper aspect of your building. Remember, pigeons want to roost in a high place, and they want fairly easy access to the outside. Prime locations to check would be around the edges of your roof, along any attic vents or windows, and in chimneys. While pigeons won't leave major markers of their passing, they will leave a trail of feces, so if you find a hole with bird poop splashed around it, that is a pretty good indication that might be an entry point. Once you've found these problem areas, you can install one-way funnels to exclude the birds before you start the home repair process.
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