The crossword solutions for the term FISH EATER FLYING are ERN, which stands for the ern, a species of large seabird. The ern is a fish-eating bird that is found in parts of Europe, Asia, and Africa. It is a large bird with a wingspan of up to 1.5 meters and is capable of flying long distances. It feeds mainly on fish, but also eats other aquatic animals such as crustaceans and mollusks. The ern is an important part of the food chain in its habitat, helping to keep the population of fish in check.