single adult eurasian reed warbler bird with a hunted insect on a reed stem in the biebrza river wetlands in poland in early

reed warbler eurasian acrocephalus scirpaceus trzcinniczek zwyczajny trzcionka bird male poland polska biebrzanski biebrza reeds stem green water pond river 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 hunted insect early spring nesting period