Common and Least Tern: York County, Maine, USA, June 2024 — At the mouth of one of our tidal rivers the Least Terns nest in great numbers, and the Common Terns are attracted by the sand eels. It is inevitable that they sometimes occupy the same airspace. OM System OM-1Mkii with M.Zuiko 100-400IS zoom at 800mm equivalent. Program mode with my custom birds-in-flight and action modifications. Processed in Photomator.