Western Wood-Pewee
Contopus sordidulus
 (L 6.25" WS 10.5" Wt 0.46 oz)
Range shows very little overlap
from Eastern Wood-Pewee.
Cataract Lake, CO
23Jun2012
Contopus in Greek means 
short foot; sordiduolus 
means dirty, unkempt. 
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