Very nice and creative details you gave to the publication @agmoore, the substitution of the seagull's beak playing with the image of the bridge really surprised me, as it certainly looks like its beak. On the other hand, it was also very good all the data you share about the gulls, I don't know much about birds, but I really think that the gull you photographed looks very similar to the ring-billed one you took as an example, it is likely that it is the same species. I congratulate you for this didactic and excellent post, a hug and best of health 🙂