two tufted ducks swim on lake biesdorfer baggersee in august. berlin, germany

zoology biology park wild animal bird eco natural habitat ecology birds pond waterfowl beak wildlife water animals germany two ducks swim lake august fuligula small diving berlin tufted duck pochard aythya aquatic watching black calmness crested eurasian coot fauna feather floating lone nature ornithology outdoor germany biesdorfer baggersee august duck