beak bill biology bird birding creation duck environment feather flock green head male mallard marsh marshland natural nature nest nesting park preserve quack sanctuary scene wildlife wing Australian banded beautiful beauty birds chestnut colored colorful colors coloured colourful colours decorative dendrocygna-eytoni distinct distinctive elegant eyes Eyton's-plumed-duck feathers grass-whistle-duck grazers handsome land-feeders long-necked monkey-duck mottled-beak mottled-bill native outstanding pair paired plumage plumed prominent-lanceolate-plumes red-legged-tree-duck red-legged-whistler standing tall tree-duck waterbird whistling whistling-tree-duck wild camouflaged animal asleep awake blue brown close-up cute domesticated drake feet fowl game isolated lake livestock paddle pond ripple river sleek swim swimming vertebrate water web webbed white yellow appearance Australian-white-ibis bare-black-head color coloring colour colouring common companions competitive downcurved-bill fairly-large farm farm-bird farmyard ibis ibis-family odor odorous odour open-farm pest pesty poultry strong-smell threskiornis-moluccus urban wader wading-bird water-bird white-plumage widespread goose red bill wet wings