anas superciliosa aquatic bird Australian bird black eye-stripe brown duck common dark-brown duck fauna fowl grey duck omnivore omnivorous Pacific black duck waterbird waterfowl widespread wild duck ripples rippling swimming water anas-superciliosa aquatic-bird black-eye-stripe brown-duck grey-duck Pacific-black-duck pond wild-duck light paddling reflecting reflections sunlight sunshine surface surfaces wild-life chick direction ducklings follow follow-the-leader following guidance guiding lead leading mother protection protective shade shadows appearance background color colors colour colours dark lake nature pair texture textured textures ahead chicks wetlands birds breed brown Domestic Duck down drakes ducks eggs farm foie gras haute cuisine Indian Runner Duck mallard meat rearing