This afternoon while scoping the 100-200 common goldeneyes and 
bufflehead below the Conowingo Dam, I found one female goldeneye with a 
very yellow bill.  I don't think the forehead is steep enough to make it 
a Barrow's, but it's still an interesting looking Common Goldeneye.  The 
bird was located on the shures landing side of the rocky island, near 
the island's shore.  I was able to get a few lousy photos, and I posted 
them here:
http://www.flickr.com/photos/odephoto/sets/72157594381793553/
Let me know what the experts think

Cheers,
Steve Collins
Towson, MD