Ring-necked duck. Aythya collaris. Com. WV on fresh water, uncom. SR on wooded lakes in Cascades and east. Look for Ring-necked Ducks on smaller bodies of water than other diving ducks. In winter and on migration, this can include beaver ponds, small lakes, marshes, cattle ponds, or even flooded agricultural fields across North America. Ring-necked Ducks breed in freshwater marshes, bogs, and other shallow, often acidic wetlands.