Tufted duck, goldeneye, wigeon, teal and possibly goosander with sometimes smew and scaup. Rarer species also visit such as smew and scaup. Along with the smew and hooded merganser, they are therefore often known as "sawbills". The scientific name "Gavia" was the Latin term for the smew ("Mergellus albellus"). Other species reported from the reservoir include osprey, smew, dunlin and European golden plover. The smew lives on fish-rich lakes and slow rivers. The term "smew" has been used since the 17th century and is of uncertain origin. The smew has hybridized with the common goldeneye ("B. clangula"). The other "aberrant" merganser, the smew ("Mergellus albellus"), is phylogenetically closer to goldeneyes ("Bucephala"). Both Shrike and Smew are named after birds, and Pennyroyal is named after a flower.