Presumed hybrid Lesser Black-backed Gull (Larus fuscus) x European Herring Gull (Larus argentatus) in Aarhus Harbour in 2010

This presumed hybrid Lesser Black-backed Gull (Larus fuscus) x European Herring Gull (Larus argentatus) was photograped in Aarhus Harbour on 3 December 2010. It immediately attracted my attention because of its dark-grey upperparts which were much darker than on the nearby European Herring Gulls, but at the same time the bird was not a Lesser Black-backed Gull.

The possibility of it being a hybrid Lesser Black-backed Gull x European Herring Gull, seems to be the best fit because it was much darker grey compared to local Herring Gulls and a Herring Gull JIZZ with short primary projection.