knob billed duck bird resting in the grass

africa african animal animals avian background beak beautiful billed bird birding birds blue botswana colorful comb crane duck ducks farm fauna feather field flock focus geese goose grass group indian knob mallard mangalajodi meadow melanotos migratory national natural nature ornithology outdoor outdoors park prairie reserve resting sarkidiornis seabird selective shorebird swan use water waterbird waterfowl wetland white wild wildlife wing wings