male great reed warbler sings his song with widely open beak

acrocephalus active arundinaceus beak bustling call calling calls cry crying dynamic dynamical energetic environment graphic great his loud male marsh noisy old open pictorial picturesque reed reedmace reedmaces reeds rowdy scenic shout shouting sing singing sings song sound sounding stirring summer sun sunny tree tumultuous vocal vocalic voice warbler warblers widely world