Odd Gull

© Paul Burrows
Nikon D1H
2003/11/19 13:24:31.6
RAW (12-bit) Lossless
Image Size: 2000 x 1312
Color
Lens: 300mm f2.8
Focal Length: 1200mm
Exposure Mode: Aperture Priority
Metering Mode: Center-Weighted
1/160 sec - f/16
Exposure Comp.: +1.7 EV
Sensitivity: ISO 640
White Balance: Direct sunlight
AF Mode: Manual

Odd Gull
(back seen to be a shade darker than adult Yellow-legged gull)
Most likely either L.B.B. x {L.B.B. x Herring} or Mutant L.B.B. Gull
but looks somewhat similar to taimyrensis Siberian Gull?