savi's warbler, locustella luscinioides. a bird sits on a reed stalk on a riverbank

savi 039 warbler locustella luscinioides bird songbird male spring closeup lake water feather wild animal small wildlife reed natural beautiful season nature brown ornithology beauty perch habitat sit outdoors sitting great vogel migrant summer singing song beak birdsong open call europa ukraine river pond savi's sits stalk riverbank luscinioides riverbank