Let's see, guess of size based on the wing is about 3 foot span, I agree.
No gulls around here.
Local crows are solid black.
Greg: It is pretty pointy, but it would spread. I tried to get a clear pic, light etc made me have to be at a slight lower angle than straight down. Would another help?
The colors fascinate me. Backwards for a Mississippi Kite (which doesn't come this far west) they are grey, white, black. This is white, gray, black. Doesn't look like anything in my book. Might be migratory (but it's late for them) or domestic (no clue what, goose maybe?)