Having a bit of trouble with these two from my walk today.The first one I think is a female Black-throated Blue warbler but the only photo I see of it describes it as a first fall female.

The second I believe to be a female American Redstart, but again the photos I see don't have the black between bill and eyes. Just an individual variation maybe?

Any comments, explanations or tips on IDing either of these birds would be appreciated as always.
I just want to put in an extra thanks to the 'senior' members of this group who assist with the IDing of birds for those of us with less experience.