Brown dipper perching on floating branch on stream cleaning itself by preening, close-up

asian dipper pallass dipper dipper cinclus pallasii preening resident bird avian bird habitat palearctic freshwater terrestrial subspecies plumage ornithology wildlife birdwatching perching environment distribution species ecosystem songbird carnivore stream nature cleaning c p pallasii water branch splash aquatic ripples feather animals natural closeup underwater wild elevation clear cute thrushlike brown hill outdoor shaking mountains