Thanks much.
Is there "quick" way distinguish between the Olympic and Glaucous ? Just wondering.
Assuming you mean "glaucous-winged," (glaucous is a different gull species):
Glaucous-winged gulls have gray wing tips, the same or similar to the color of their mantlle (upper back). There is variation here, with some having slightly darker wingtips, but it should mostly match the back.
Olympic gulls have wing tips that are intermediate between gray and black. Your first olympic gull has almost black tips with slight grayish coloration, while the second is much closer to gray, but clearly darker than pure gray.
Additionally, Olympic gulls usually have a mantle shade that is in between western (dark) and glaucous-winged (light). This is also variable, and shouldn't be used alone to make the Olympic determination. Finally, adult western gulls usually have unstreaked heads, while glaucous-winged and olympics usually are quite marked up.