Shore Fliers is a term used to describe three species of seabirds: ERNS (4 letters), TERNS (5 letters) and ERNES (5 letters). ERNS are small, short-billed seabirds that feed on fish and insects. TERNS are medium-sized seabirds with long, pointed wings and forked tails. They feed on fish, crustaceans and insects. ERNES are large, long-billed seabirds that feed mainly on fish. All three species are found along coastal areas and estuaries, where they hunt for food.