appearance Australian-white-ibis bare-black-head bird color coloring colour colouring common companions competitive downcurved-bill drake duck fairly-large farm farm-bird farmyard fowl ibis ibis-family odor odorous odour open-farm pest pesty poultry strong-smell threskiornis-moluccus urban wader wading-bird water-bird white-plumage widespread wildlife appearances arid Cacti cactus clumps clusters colors colours display edge edges flora frilled frills garden-display garden-plants green irregular leaves light ornamental perennials plants pointed protection ribbed ribbing ribs shape shapes sharp short-spikes small-spines spikes spines spiny succulents sunlight surface surfaces textures unusual variations variety various barrel barrel-cactus round symmetry abstract architectural backdrop background barrier brick brick-wall bricks brickwork cement constructed corner corner-wall exterior external firm fixed linear lines merger merging mixed mortar perspective perspectives repaired secure security smooth solid standard strength strong style surfaced texture textured variation varied wall wallpaper autumn autumnal colored colorful coloured colourful cool dark deciduous decorative fall fallen-leaves foliage grass grassed homes houses lighting park patterns play-area playground row rows shade shadow shadows street streets suburban sunshine trees basic traditional-brick-wall walled well-built windows calcium-carbonate decoration distinctive flower-dome formation forms garden inverted shaped Singapore Stalactite stalactites upside-down white angles arched arches architectural-elements architecture building craftsmanship creative decorative-battlements Designs glass heritage historic historical history old ornamentation outside pigeons segment stones stonework traditional wall-segment