Chirp,
Greg, I write in reply to your question about WTSPs. I live in Bellingham and have regularly seen WTSPs in my yard, off and on from fall to spring. Though most are the white-striped variety, I usually have at least one tan-striped bird each winter.
Photos can be found here …..
http://www.douglaslbrownphotography.com/
https://www.flickr.com/photos/146696747 at N03/page1
cheers, db
Bellingham