What´s most probably the same gull seen in Madrid (Spain) last winter that created a lot of debate, also in this forum (with some birders saying it could be californicus, but with some of us saying it was either an aberrant lusitanicus YLg or, most likely, a hybrid common/Ring Billed x YLG/Herring/LBB) was seen last week at the same spot.
You can see some pics here:
With these photos, it becomes more clear now that the bird has to be one of the hybrids mentioned above, most probably Ring billed x LBBg due to wing colour, head streaking and bill pattern.
The hybrid option, with one of the parents being a three-year gull, either Common or Ring-billed, would also explain the "fast" moult of this gull compared to the plumage from last November (if the bird is indeed the same as last year)
what do you think??
Daniel L. Velasco