Here are the discussion notes on the Westmoreland Gull.
The majority opinion was Nelson's Gull and they are
apparently annual at Westmoreland.
http://home.pacifier.com/~mpatters/bird/uggu/dsc_uggu20040102.html

As for the Renton Gull, I defer to Eugene Hunn on what the
bird actually is. I was simply pointing out that there is
a gull that meets the general description of this gull (Nelson's
Gull) and that the sharply bicolored bill in this photo is
consistant with a Glaucous-type hybrid and atypical (though not
impossible) for this age class of Great Black-backed Gull. The
photos by themselves do not allow for elimination of Nelson's
Gull (through no fault of the Sullivans).

It is clear that Charlie, Ryan, et al. closely observered this
bird and have provided additional information, which was in line
with what I was suggesting. However, a nice wing and tail shot
may be necessary to assuage the skeptics on ID-frontiers where
the photos have been posted (not by me).

Charlie Wright wrote:
>
> To me, it doesn't look like there necessarily has to be any Glaucous genes
> in that bird at all. Rather, I think it is just a sort of pale Herring.
> While the bill pattern is tantalizing, it seems just fine also for a 2nd
> year Herring. As for the size, Herrings are known to get even bulkier than
> this bird. Glaucous tend to have short, stouter bills than this. I expect
> Glaucous hybrids to have a lighter tailband with more marbling throughout,
> or at least in the outer rectrices. The spread wing pattern seems just like
> most Herring Gulls to me. At any rate this isn't a good reference photo of
> Nelson's Gull.

--
Mike Patterson
Astoria, OR
celata at pacifier.com

Half-a-bee, philosophically must ipso-facto half not-be.
But half the bee, has got to bee Vis-a-vis its entity...
d'you see?
But can a bee be said to be or not to be an entire bee
When half the bee is not a bee due to some ancient injury?
-Monty Python

http://www.pacifier.com/~mpatters/bird/bird.html