I set this first camera on a snag in the Fir forest as a pre-class set for Codger's camera trapping course v.2013. I was really hoping to get an awesome flying squirrel coming to the snag to do awesome flying squirrel things. Instead I got a woodpecker doing some woodpecker things. You know, hopping around, pecking wood, and flying. This looks like a male Black-backed Woodpecker, Picoides arcticus. Notice the yellow patch on the forehead/crown. But remember, we suck at birding, so I could be completely wrong here.
Next are some videos of White-headed woodpeckers, Picoides albolarvatus, that were coming in and out of a snag at the top of Yuba Gap on Hwy-49. We had this camera up for just a couple of hours, as it was in a highly trafficked area.