gone fishing

I met an ebayer to collect my parcel after work then called into Branston Water Park on the off chance I could get my first photo of the day, the light was not good. Parked the car, everything looked drab, took a boring shot of a mallard and was about to leave when I heard the gulls start to kick off. Not sure what was going on quickly lifted the camera to see they had caught a fish which was too heavy and they kept dropping it whilst being chased by other greedy gulls.

Think they are young black headed gulls?