couple of juvenile mute swan birds - latin cygnus olor - in flight during the spring mating season in wetlands of north-eastern

mute swan cygnus olor labedzie lebedz narew biebrzanski national park narwianski bird pond lake water surface swim reserve avian wetland wetlands moor moors lakeland wildlife nature natural life ecology fauna poland europe wing wings beak tail neck color colorful wild zoology travel exterior outside outdoor group couple three several few white