This species of duck breeds along Northern Hemisphere Arctic coasts of northeast Europe, North America and Asia. It is a large sea duck and is one of the most spectacular waterfowl species found in North America. The drakes are heavier than the ducks with a weight of 3.68lbs as opposed to 3.45lbs of the ducks. The male has a mostly black body. Its multicolored head, nape and neck are a pale bluish grey. The bill is red with a white nail and a bright yellow knob. The female is brown with black barring.

The PECk-O-MATIC Automatic Duck Feeder provides fresh feed at all times. Fresh feed is one of the most essential aspects of breeding healthy poultry. To feed corn, the suitable size of the regulator disc is ¾ inch or 1inch. When the feed is crumble or milo, the 3/8-inch regulator disc from PECk-O-MATIC Automatic Duck Feeder can be used.

The king eider forages depending on the season. For the most part, it spends it time at sea, diving for benthic invertebrates. However, during breeding season, it forages on freshwater lakes and ponds. It dabbles, feeding mostly on small invertebrates.

The King Eider duck got its name from its large blue-gray crown and bright hues. The king eider ducks nest near water, lined with vegetation and down from the female, generally in low marshy areas. An interesting fact about this species is that when the female senses the presence of an intruder, she sits low on the nest with her head flattened on the ground.