The mallard is a common species of duck found in many parts of the world. It is easily recognizable by its vibrant green head, yellow bill, and white neck ring in males, while females are mottled brown with an orange bill. Mallards are often seen in freshwater habitats like ponds, lakes, and rivers. These ducks are omnivorous, feeding on a variety of foods including aquatic plants, insects, and small fish. Mallards are also known for their distinctive quacking sound. They are social birds, often seen in groups, and are a popular species for birdwatchers and nature enthusiasts.