Heard calling from the very tops of douglas-firs in the morning and evening frequently. song sounded like a spiraling song that quickened as it progressed, which was how I confirmed the identity using a google search for the call. The bird had a dark head, and often when it moved appeared very gold colored, although because it was so high up and quite small it was hard to clearly see it. Looked as though it might have a white patch behind or on the side of its head, breast looked dull whitish when not reflecting the morning sun. tail was long and definitely ended in a slightly notched rounded fork shape
Habitat description: 30 yr old dense douglas fir stand planted by weyerhaeuser after clear cut, in usual western hemlock-western redcedar vegetation. Patches of deciduous trees, maple, alder, cottonwood. 400ft above sea level south and east facing hill in tolt river watershed where it meets the snoqualmie river. habitat divided into residential forested plots. separated by old logging roads.
If you think this observation is inaccurate, please add an ID, participate in the quality assessment above, or describe the inaccuracy in a comment.