algae background brackish bush bushland colors colours cool country creek crowded dark flow flowing foliage grass grasses green greenery grounds light moving peaceful plants reeds reflecting reflections ripples rippling running rural rushes shade shadows slow sluggish stones stream streaming sunlight sunshine textures tranquil uncultivated vegetation water wet atmosphere atmospheric bog color coloring colour colouring conservation contrast contrasting damp dismal forested-wetland low-lying marsh melaleuca-rhaphiophylla paperbark-trees paperbarks park peeling reserve slow-flowing swamp swamp-paperbark trees wetland wetlands wildlife bird-colonies birds breeding-place colonies estuarine-wetlands estuary estuary-waters fence fenced food-supply habitat migratory-birds nesting nesting-place nests nursery rookeries rookery roosting roosting-place tidal waterbird- habitat barrel container creeping dye empty fluid fluid dynamics laminar liquid non-newtonian paint pouring red spill thick vessel viscosity viscous