Sea-Gull or Bay-Gull?

OK, so the title is just a play on words, and this is not the greatest photo I ever took. I went to Roosevelt Field Shopping Center today and on the way back to my car, passed this car and another one with seagulls standing on the roofs! I couldn't believe it! I have never seen this before. They are usually walking around on the macadam, but to stand on the slippery, shiny surface of a car just seems unbelieveable to me. For the sake of the car owners, I hope they don't start dropping clams on the cars to break the shells open!