You’re thinking of Saint Urho.
Gulls also got rid of the locusts for the Mormons in Utah.
Yes. You can see from its range map that it’s another one of the inland gulls, like Franklin’s Gull.
Wikipedia doesn’t qualify as an ornithological reference. They are referred to as seagulls colloquially, but as has been said that is a misnomer. There are many, many birds with webbed feet that aren’t seabirds. Referring to all gulls as seagulls is like calling all ducks seaducks because some species are found along the coast. And as this thread shows, it’s annoying because it gives people the impression that gulls are restricted to coasts, when in fact they are very commonly found inland.
Why do seagulls fly over the sea?
Because if they flew over the bay, they’d be bagels!