adult Herring X Lesser Black-backed Gull

adult
Herring X
Lesser
Black-backed
Gull

Fig 1) This bird is a presumed hybrid; these photos were taken on the nesting grounds on Skomer Island, Pembrokeshire, Wales. This bird was paired with a Herring Gull. Photograph by Mike Wallen, 1998. Copyright 1998.

Fig 2) This is the same bird as in Figure 1. The mantle color was described as intermediate between argenteus and graellsii, but differed from Yellow-legged Gull in that it still had a blue tinge. Photograph by Mike Wallen, 1998. Copyright 1998.