An adult Lesser Black-backed Gull shot by John Pogacnik at the same location as the dark-backed bird below just 15 minutes earlier. Presented as an example of mantle shades under similar lighting.
Another image of what may be an intermedius Lesser Black-backed Gull showing wing extension and comparison of size with Ring-billed Gull.
This image permits a glimpse of the underside of the wing-tip in the putative argentatus type Herring Gull. Note the three wing tips - the bottommost is that of the Ring-billed Gull behind the gull in question.
