That looks like a Ring-billed Gull (Larus Delawarensis), actually, not a Herring Gull. Ring-billed Gulls have yellow feed and a black ring around their bills while Herring Gulls have a red mark on their beak and pink feet. Herring gulls are also bigger than ring-bills.
Juveniles are a little different, but this looks like a non-breeding adult ring-billed gull.
Juveniles are a little different, but this looks like a non-breeding adult ring-billed gull.