Melanistic Herring Gull?

Melanistic Herring Gull?

Observation - Melanistic Herring Gull?. Description: Its right profile appears black (see 3rd pic), its left much greyer. Pink legs. Looked the size of a herring gull, or perhaps a little larger. Red spot visible on lower mandible. Can't decide between either Herring, LBB or GBB, and presumably a juvenile.

Its right profile appears black (see 3rd pic), its left much greyer. Pink legs. Looked the size of a herring gull, or perhaps a little larger. Red spot visible on lower mandible. Can't decide between either Herring, LBB or GBB, and presumably a juvenile. I'll plump for one but with little confidence of being right!*

*new id added