Probable hybrid Herring x Glaucous Gull

Probable hybrid 2nd winter Herring x Glaucous Gull, 8th Nov 2006, Long Drove Cottenham, © Dick Newell
This bird could just be a northern argentatus Herring Gull, but the overall shape of the bird, and particularly the head and bill shape,with a typical young Glaucous Gull pattern, combined with an overall pale colouration, including a uniform pale tail without a terminal bar, completely patterned tertials, pale fringed primaries and huge translucency in the primaries lead me to believe that it contains a lot of Glaucous Gull genes. (RGN).