Reference my previous post Bell’s Vireos. Forget everything you ever read there. Sue Oliver contacted me and brought it to my attention that it is an Orange-crowned Warbler (Vermivora celata). After she pointed it out and I compared them in my Sibley’s guide, I could easily see the differences.
So again for your immense enjoyment, here again are the photos of the Orange-crowned Warbler.
Happy Birding!!