black background feathers fun splashing swan waterdrops white swan wings afraid bill bird birds black swan cob dream duck flu hide rest sleep sleeping stroke beak Black-necked swan cute Cygnus melanocoryphu feather lob nature red swim together two water wildlife zoo Australia Australian black black-swan curved-neck cygnus-atratus dark elegance elegant emblem emblematic fauna gregarious iconic large long-necked pair protected protected-species red-beaked red-eyed social symbol symbolic water-bird Western-Australian-State-emblem Cygnus atratus life pairs protected species red beaked red eyed reflections ripples rippling river swans swimming water bird Western Australian State emblem green-water life-pairs pond