Hide filtersShow filters Clear allCardinalidaeCerylidaeCettiidaeCometsLentibulariaceaeNyctaginaceaePyrginaeBhutan × Close BhutanCettiidaeBirds 2 Apr 2017Grey-sided bush warbler (Cettia brunnifrons)It’s amazing how such tiny bird species (just think of the house wren for instance) can produce such loud sounds, and that it is done so with seemingly no more…by morten