On my last morning in Milwaukee I took one last drive over to Schlitz. I got a few good looks at Northern Cardinal. Then, while doing tech support by cell phone with David Wimpfheimer back in California, I finally learned the source of those sporadic weird calls I couldn't identify when a Red-bellied Woodpecker dive bombed into the feeder, grabbed exactly one peanut, and zoomed right back out again. I was happy to get two frames, even if they were feeder shots.