pair of black-headed gull birds - latin larus ridibundus or chroicocephalus ridibundus - known also as laughing gull, in flight

blackheaded gull laughing larus ridibundus chroicocephalus mewa smieszka biebrza narew biebrzanski national park narwianski bird red bill water reed reeds reserve avian wetland wetlands moor moors lakeland white wildlife nature natural life ecology fauna poland europe wing wings beak tail neck color colorful wild zoology travel exterior outside outdoor two couple pair