single adult laughing gull bird on a water surface of the biebrza river wetlands in poland in early spring nesting period

laughing gull larus ridibundus mewa smieszka bird poland polska biebrzanski biebrza water pond river reed reeds spring lake park color colorful travel tourism outdoor nature animal avian wing wings living wildlife wild wetland wetlands moor marsh marshes swamp swamps natural conservation bill beak tail one single alone adult surface early nesting period