Here are a few images from Fernhill Wetlands (Birding Oregon p. 61) on July 30, 2010. Songbirds push the limits of a point-and-shoot camera, but occasionally a bird will be close enough and stationary enough to allow a decent portrait.
Cedar Waxwings were flycatching from the brushy edges of the ponds.
This Song Sparrow was going through an extensive molt. He lacked most of his tail, and his body plumage is very disheveled.
Brown-headed Cowbird. The scaly pattern on the scapulars and wing coverts identifies this bird as a juvenile.
Ethical Birder 
what a great photo of that waxwing!
now that I see your cowbird, I think I might have seen them too in Oregon last year.