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 reflections aggressive birds chroicocephalus novaehollandiae common gray and white grey and white gulls Larus novaehollandiae Noisy prolific resting river's edge riverside sand scavengers screeching seagulls sepia silver gull standing wading waiting watching Australian landscape brown color creek dam dirty water forest green gum tree leaf pine tree pond reflection ripple season summer water appearance bush coloring colors colouring colours contrast contrasting dried drought dry dry-brown-land drying flat grass grasses hardy light outback perspective perspectives river-bed rough rural sandy scrub shrubbery shrubs survival trees vegetation waterless pools puddles central central-Australia descriptive distance distant hilly rocks rocky slope slopes sloping