Shore scavengers are a type of bird that feed on the shoreline. They are also known as beachcombers or beach scavengers. ERNS (4 letters) is an acronym for 'Eurasian Ring-necked Sandpiper', which is a species of shore scavenger. ERNES (5 letters) is an acronym for 'Eurasian Oystercatcher', another species of shore scavenger. Both species are found in coastal areas and feed on invertebrates, such as mollusks, worms, and crustaceans.