autumn forest with juvenile mute swan at black pond peat bog reserve in mazowiecki landscape park near warsaw in poland

activity autumn background biology bird black bog celestynow conservation cygnus czarne diversity europe fall flora forest greenery jeziorka karczew krajobrazowy lake landmark landscape leaf mazovia mazowiecki mazowsze moor mute natural nature olor otwock outdoor park peat plant poland polska pond postcard protection reserve swamp swan thicket torf tourism touristic travel tree trekking trunk vegetation wallpaper warsaw warszawa water wet wetland wood wooded young