another question, What is the best way to patch the holes that were made from small birds on cedar siding. The holes are mostly smaller than 2 inches. Then how do you keep this from happening again.
Sounds like you may have a bug problem. That is what the bird are after. If it is carpenter bees there isn’t much you can do other then a constant battle. If it is Powder Post or Old House Bore you will need to strip the stain and apply a borate solution.