We have had a woodpecker knocking on our roof every morning for the past two weeks. It takes up to 5 times to shoo it off (yelling, banging on windows). We have lived here (near Black Forest) for 19 years and usually don't have this issue till spring, and not that often. It is coming earlier each day. What can we do? (need sleep)
Check out CSU Extension Fact Sheet #6.516 on Woodpeckers. Hanging shaving mirrors and Hawk silouettes work well. The fact sheet has additional information.