Erolia Alpina is a scientific name for the bird commonly known as the dunlin. The dunlin is a small wader bird found in a variety of locations, including coastal areas, marshes, and tundra. Some alternates names for Erolia Alpina include the red-backed sandpiper, red-breasted sandpiper, and brown sandpiper. These names reflect the bird's distinctive reddish-brown coloring and its habitat in coastal environments. The dunlin feeds on invertebrates such as worms, snails, and crustaceans, and can be identified by its long, down-curved bill and quick, darting movements. Whether referred to as Erolia Alpina or one of its other common names, the dunlin is a fascinating and important part of many ecosystems.