Brine flies that live in the Great Salt Lake are an important food source for California Gulls and watching the gulls feed on the flies is fascinating as they use several techniques to catch them.
I haven't seen Black Skimmers in over six years now but in my mind I can still hear them calling when I look at my images of a group of them in flight.
While my mother was visiting Utah she was able to see how California Gulls chase and feed on Brine Flies, it is fascinating feeding behavior. As my mom watched, I photographed.