Thanks Click (and Kernuak)!
I was wondering exactly that and I guess last night when I posted I was just too worn out and frustrated after looking at so many internet pictures, to have the needed patience. There sure are a lot of little birds that have dominant grey and touches of yellow. I wish there was a check list against a picture such as jrista was kind enough to post for me, where a person could enter something like "yellow rump' and be directed to all birds that fit that description and then the next entry would allow greater fine tuning etc. Especially since some items are definitive, such as eye circle is not full, or whatever.
Guess I was hoping life at my age wouldn't have to be so challenging!
Here's two more shots that I think confirm. The dark eye stripe at a glance to me was a shadow but now it stands out after looking more closely.
Any more advice relative to good books or IDing sites??