agile ape arboreal Asian bright-eyed climber climbing eating great-apes hairy hanging highly-intelligent intelligent mammals orang-utan orangutan playful playing pongo-abelii primate primates red red-haired snacking suspended Australia Australian bird black black swan Cygnus atratus emblem emblematic fauna gregarious iconic large life pairs pair protected protected species red beaked red eyed ripples rippling river social swan swans swimming symbol symbolic water bird Western Australian State emblem black-swan curved-neck cygnus-atratus dark elegance elegant long-necked protected-species red-beaked red-eyed water-bird Western-Australian-State-emblem wildlife reflections green-water life-pairs pond water