Brown dipper swimming across stream and perching on streambank, close-up

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