California Lesser Black-backed Gull?

[AndyB]

Glaucous-winged and Western in front and LBBG behind? It's a good bird, so would be interested in hearing other's thoughts:

http://www.flickr.com/photos/33835670@N00/2273254035

[W. Ruskin Butterfield]

Superficially looks like LBBG. The lower bill has too much of a gonydeal angle?? Very dark looks like intermedius?? What are the odds of an intermedius bird in California? Are there asian LBBG this color? I would not call it a second winter but a second cycle? Sorry not much help. May be a hybrid of unknown parents that mimics LBBG?
W.

[Red-eyed Video]

This doesn't look like a LBBG to me, the legs are pink & there's too much white on the tertials for starters. Could it be a female Western judging by the comparative size to the other bird in the picture?

[JanJ]

Without going in to plumage characters, not ignoring the fact that there might one or few such characters wich might suggest a LBBG over a Western Gull - which I think it is.
Structure and bill size with a pronounced (short) gonys angle, the extensive gape line and head shape suggest to me a Western. Perhaps it might come as a surprise to some, with a thin looking bill, without a marked bulbous tip like this to suggest a Western, but a (small) female type with bills like this do occur.

JanJ

[AndyB]

Thanks all for the feedback. What also drew its attention to the observer I think was also how dark the mantle was compared to the Westerns. Small female Western does seem like the logical conclusion however.