Hermit Thrush subspecies in Colorado?

[Paul Hurtado]

I'm in the state for the weekend visiting family in Denver and Pueblo, and yesterday managed to steal a few hours to chase after the Eastern Phoebe reported from the Plum Creek bridge at Chatfield (no luck).  

While I was there, I came across a Hermit Thrush foraging in tamarisk (near a DE Junco) that initially had me thinking Ovenbird due to it's smaller size, darker back, and greenish hue to the back -- all of which struck me as distinctly different from the eastern Hermit Thrushes I'm used to seeing in Ohio.

Any of you banders (or others) care to chime in on what Hermit Thrush subspecies (or subspecies groups) you tend to encounter during spring migration?  During other times of year?  This bird struck me as spot-on for one of the pacific/northwestern subspecies (which I assume is synonymous with the "western lowland" subspecies group in eBird?)

Here's the Chatfield SP--Plum Creek area eBird checklist (no Hermit Thrush photos, unfortunately): http://ebird.org/ebird/view/checklist?subID=S17921753

Good birding,

Paul Hurtado
Columbus OH (and Pueblo, CO)