[cobirds] Odd goldeneye on S Platte south of 88th (Adams) 1/9

Hi Everyone, 

Today 1/9, visiting friend Rebecca Van Dyke and I walked the South Platte Trail from 88th Ave to 74th Ave. We found one male Barrow's Goldeneye with a crowd of other goldeneyes, and we found an odd goldeneye with a big splotch of white on its face. Rebecca took pictures,  see attached. Wasn't sure if Common Goldeneye x Bufflehead was a possibility or if this was some known aberrant plumage. Head iridescence was green but hard to see. Has anyone else seen such a thing? 

Mark Miller 

Longmont, CO 

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