The Mallard duck is a common waterfowl found in many parts of the world. It is easily recognizable by its vibrant green head in males, while females are mottled brown for camouflage. These ducks are often seen in ponds, lakes, and rivers, where they feed on aquatic plants, insects, and small fish. Mallards are social birds and often form large flocks. They are known for their distinctive quacking sound, especially the females. During the breeding season, males display colorful plumage to attract females, and they typically nest near water sources, laying a clutch of about 8 to 13 eggs.