Captured at Delta Ponds.

"the Black-capped Chickadee is widely heralded as one of Oregon's friendliest and cheeriest residents. Even in the midst of winter, this bird "fairly overflows with good spirits"." (Quoted from Oregon Department of Fish and Wildlife, Oregon Wildlife Species)
SEE - http://www.dfw.state.or.us/species/birds/chickadees_nuthatches.asp