WWT Martin Mere in Lancashire makes it easy to take photos of various birds attracted to the ready availability of food. The migratory goldeneye is not usually present in England in the summer. I don’t know if this one nursed an injury. It certainly struggled to get a share of food against a gang of bigger and stronger mallards.
Summer colouring is rather drab compared to the resplendent male plumage of the winter (see goldeneye). But how those eyes stand out!