I videoed this Gray-cheeked Thrush at Tower Grove Park today, 9/29/12. 
After watching the video, I became quite puzzled by the fact that I see 
more brown on the upperparts than gray.  I see more rufous on the 
primary edges and tail.   And even the flanks seem more brownish.  Is it 
possible this is a Bicknell's Thrush?  I know that seems pretty 
far-fetched, (dang near impossible) but check out my video:

(Low resolution) 

(High resolution) 

I did some online research and found McGill Bird Observatory's website 
helpful on the Bicknell's and the Gray-cheeked, but I still came away 
puzzled.   Here is McGill's links:

Gray-cheeked Thrush 

Bicknell's Thrush 

Andy Reago
St. Louis MO

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