They might not be pretty but I was hoping to see more of these brutes than I managed. Here are the two 2CY individuals that came into photographic range. The flying bird was offshore and the other was on Marconi Beach, MA, in July.
Edit: found another pic of a different, but very similarly plumaged bird (right), also offshore.
Also here are some very heavily cropped pics of another 2CY American Herring Gull showing off its dark tail feathers.