Wild Kingdom on Instagram: "Eider ducks are large sea ducks known for their soft, warm down feathers, which they use to line their nests. Native to northern coastal regions of Europe, North America, and Asia, they’re often found in cold marine environments. The males are striking with bold black and white plumage, while females are brown and well-camouflaged. Eiders ducks go underwater to feed, mainly on mussels and other shellfish. Their gentle cooing and soft “ooooh” calls are as charming as t