poland, biebrzanski national park – pair of white-winged black tern birds – latin: chlidonias leucopterus

poland biebrzanski biebrza national park reserve color colorful travel tourism outdoor nature bird birdie animal avian wing wings living wildlife wild green wetland wetlands moor marsh marshes swamp swamps natural conservation trunk wood wooden bill beak tail flying fly portrait body eye head leaf bush branch fields whitewinged black tern chlidonias leucopterus rybitwa bialoskrzydla