Genus Erolia refers to a group of small, migratory birds that belong to the sandpiper family. This genus includes over 20 species, most of which are small wading birds found near water bodies such as rivers, lakes, and coastal areas. Some synonyms for Genus Erolia include Calidris, which is commonly used in North America, and Micropalama, which is a genus of similar sandpipers commonly found in the western hemisphere. Other synonyms for Genus Erolia include Actodromas, Ereunetes, and Limicola. These small birds are highly adaptable, often able to survive in a variety of habitats, and are known for their long migrations across different continents during breeding and non-breeding seasons.