The harlequin duck is a small, colorful sea duck known for its striking plumage. Males display a mix of blue-gray, white, and chestnut colors, while females are more subdued with brown and gray tones. These ducks are typically found in fast-flowing rivers and coastal areas, where they dive underwater to forage for insects, crustaceans, and small fish. Harlequin ducks are migratory birds, breeding in the northern regions of North America, including parts of Alaska and Canada. During winter, they can be seen along the Pacific coast, from Washington to California. Their unique appearance and habitat preferences make them a favorite among birdwatchers and wildlife enthusiasts.