bare head bird bird in zoo birding carnivorous bird portrait of vulture vulture vulture bird vulture species vulture types zoo appearance Australian-white-ibis bare-black-head 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