Stuck in Dundee.....
Posted this in Gulls subsection at end of September but no resolution to ID there (and little input). Appreciate any comments as to identification. Thoughts are between a HG x LBBG hybrid, or possibly a small race YLG (though 'omissus' HG possibly also an option). Bird was seen on a rather dull overcast morning roosting with a flock containing a mix of gulls and stood out as different being halfway in shade between HG and LBBG (both present) and with yellow legs, on 30th September. There are a few other photos on the thread below - including 1 showing the LBBG to compare mantle tone.