appearance Australian-white-ibis bare-black-head bird color coloring colour colouring common competitive downcurved-bill fairly-large ibis ibis-family odor odorous odour pest pesty strong-smell threskiornis-moluccus urban wader wading-bird water-bird white-plumage widespread Australia Australian beak bill colored colorful colors coloured colourful colours curved-beak curved-bill dusky farmer's-friend fauna featheed feathers feeding Grasslands ibises insect-eating insectivore insectivorous iridescence iridescent iridescent-bronze large-waterbird long-down-curved-bill metallic-sheen naked-black-head plumage reedy grass shadows shiny straw-necked-ibis sunlight sunshine threskiornis-spinicollis waders wildlife companions pedestrians people public tourists drake duck farm farm-bird farmyard fowl open-farm poultry