Larus schistisagus Gull with Pleuronectidae Flounder
This slaty-backed gull (Larus schistisagus) was watching other birds fish. When a common merganser (Mergus merganser) caught this right-handed flounder (Pleuronectidae), the gull swooped down to steal the fish. The bird's nictitating membrane has closed to protect its eyes while eating.