Animal, Waterfowl, Duck, Anseriformes, Mallard, active, alive, animal, backdrop, background, biodiversity, biology, bird, conservation, coyly, day, duck, ecology, ecosystem, environment, fauna, feathers, fowl, freshwater, green, habitat, horizontal, lake, life, living, looking, nature, organism, ornithology, outdoors, outside, ripples, safety, scenery, science, shallow, shore, surface, swimming, vegetation, wader, waterbird, waterfowl, water, wet, wild, wilderness, wildfowl, wildlife, zoology, sensory activity, domestic fowl, outdoor, look, wetness, fresh water, ripple, wading bird, shoal, skill, sport, discipline, twenty-four hours, dissimilarity, direction, life science, improvement, feather, heterogeneity, exercise, gallinaceous bird, moisture, food, workout, wave, diversion, looking at, disfavor, difference, nonuniformity, meat, poultry, rejection, aquatic bird, diverseness, work, stage set, experience, transformation, water sport, situation, sensing