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 companions wildlife pedestrians people public tourists drake duck farm farm-bird farmyard fowl open-farm poultry astaxanthin banded beak black-wingtips brilliant-scarlet-coloration captive carotenoid colorful colors colourful colours distinctive eudocimus-ruber exotic-bird feathers forager large-toed long-legged long-narrow-decurved-bill long-necked mangrove-tree-nesting plumage prolific red-pigmentation scarlet-ibis South-American species tail threskiornithidae-family tropical wings