I'm not convinced. Nice pictures, though.
As mentioned the white with the speculum is wrong.
I would expect a somewhat lighter shading on the head also.
And of course it's out of its normal range.
A hybrid of some sort perhaps though.

My Bewick's wrens have finally returned but I don't think they
nested in the yard this year.

The crows have been soaking stuff in my birdbath, hard to say
what, possibly bread or something they've been stealing from the
business garbage next door. It's too mushy and icky to
identify on these finally hot days. It's disgusting.

Doug Daily
Northgate, Seattle