The Žemaitiškės flood-plain on the Eastern side of Kretuonas Lake is home to numerous bird species, which are included on the international Red List, such as: black-necked grebe (Podiceps nigricollis), black tern (Chlidonias niger), gadwall (Anas strepera), quail (Coturnix coturnix), spotted crake (Porzana porzana), corncrake (Crex crex), great snipe (Gallinago media), black-tailed godwit (Limosa limosa) and others. This is a newly formed natural area in a previously cultivated meadow drained by people. The drainage system was blocked and a marsh developed in the area of the former Vajuonėlė River. The best way to observe the natural area is from the birdwatching tower near Reškutėnai.