1. Physical characteristics: Ducks have physical characteristics adapted to aquatic life, including waterproof feathers, flat beaks, wide and flat feet, and webbed feet, which help them swim and feed in the water.
2. Eating habits: Ducks are omnivorous animals, and their diet includes aquatic plants, small fish, insects and grains. This diversified eating habit enables ducks to survive in different environments.
3. Social behavior: Ducks have social behavior and social structure. Ducks often live in groups and communicate in complicated ways. In addition, many duck species have migration habits and will migrate between different regions according to seasonal changes.
4. Ducks belong to Chordata, Vertebrates, ornithoptera, Zoology and Ducks. They are domesticated from wild mallard ducks and spotted ducks and are common poultry. Duck is a general term for waterfowl of the family Anatidae, including wild ducks and domestic ducks.