Lunch for a Gull

Always opportunists, gulls will take advantage of any available food source, no matter how gross you or I might find it. This Ring-billed Gull grabbed something and valued it enough to keep it away from the other gulls, which naturally chased after this one to steal its lunch. I am not sure exactly what it has. In fact, it does not even look like something edible, but what looks inedible to me may not look the same way to a scavenger.