Thanks Nick,
I still need RBBGull on my London list so will go for it soon...

--- In londonbirders@..., "bty988478" <nick_tanner@t...>
wrote:
> just to let anyone who's interested know that the Isle of Dogs Ring-
> billed Gull is back to it's old reliable ways, I've seen it 4 times
out
> of 4 so far, this weekend should provide ideal viewing conditions
with
> low tides on both Sat and Sun mornings, an hour either side of 10 am
> should prove productive, from the end of Glenaffric Avenue take the
> footpath left of the slipway, after about 70 yards there is a raised
> area fenced off with spiked green railings, the ringer is usually on
> the foreshore here and showed down to 10 yards on Sept 1st. Nearby
> Mudchute Farm has produced a few typical migrants so far and has a
> small population of Monk Parakeets.
>
> Nick Tanner