Which Kinglet? Camano Washington State (1 Viewer)

[Fandango739]

Seen last week at the Cama Beach State Park, up the slope in the heavy woods with undergrowth.
Only photo. The bird was not at all interested in having its picture taken and was a bit everywhere.

Many thanks!

 

[Butty]

No striking head-pattern: ruby-crowned kinglet.

 

[KC Foggin]

So much gray but as Butty mentioned, no head patterning so I guess I go along with Ruby-crowned