Junco is a reasonable guess. They are migratory and are on the move now. Most small birds migrate at night to avoid predators, and can be attracted/confused by artificial light. Flycatchers would have long since left that area. It's too late in the year for them at that latitude. As has been said, many small birds are drab-coloured at this time of year. Unlikely to be a wren, though they do sometimes creep around houses to gather insects. BTW, you still have Winter Wrens in that area. It hasn't been renamed, but split. Pacific Wren (looks much the same but has a slightly different song) is found mainly in the Rockies and west. As others have said... snap a picture with your cell phone! Even a crappy pic can be exceptionally helpful in identifying the species. There are lots of good birders out there, even on hunting sites.