Is this a juvenile flycatcher? (more pictures)

by Janet Lanier
(Carbondale, CO, USA)

I believe this is the same bird I had photographed earlier (around Oct 11) as a juvenile and posted on the site. These are updated photos (Oct 19) so this could be the same bird but matured more. As the bird gets older, I seem to be able to find better ID possibilities. Photos of ash-throated flycatchers seem to come close to this bird but I still have not been able to find any photos where the bird has a lightly rust colored breast like this one. Still looking for ideas on what this bird might be.