Hi Tweets:
We live north of the UW where Ravenna and Maple Leaf intersect. For the past few years our neighbors have been fending off Flickers that are pecking at the second story of their house. They tried mylar strips, an electronic distress call, an inflatable scary thing the Audubon shop calls terror-eyes, even constructed a Flicker box. All to no avail. I post this in hopes the Tweeters community has some ideas for them.
Dianne and Larry are at: diamars at comcast.net

Their note----
We?ve been particularly hard hit this spring by persistent Flickers pecking on the SE corner of our house ? 12 NEW holes! I?ve covered them with galvanized plates as fast as the birds could start them. Over the last several years you may have been amused by our efforts to deter the birds; this year we even built a special Flicker bird-house ? to no avail. We?ve recently cut down 2 straggly trees that may have been giving the birds extra cover. This summer we?re planning to stick our necks out and replace the siding that has been pecked. We?re considering cementitious siding on that quadrant of the wall ? maybe it will be too hard for the birds, or at least not as tasty as pure cedar.