koskeli

Koskeli is a Finnish term often referring to the common eider duck (Somateria mollissima) in some regions of Finland. The eider is a large sea duck species found in the northern Atlantic and Pacific oceans, as well as in the Baltic Sea. These ducks are well-known for their soft down, known as eiderdown, which is highly prized for its insulating properties and is collected from abandoned nests.

The common eider is characterized by its bulky body, large head, and distinctive bill. Males typically have a striking plumage of black and white with green markings on the nape, while females are mottled brown, providing excellent camouflage. They are diving ducks, feeding primarily on mollusks and crustaceans, which they catch by diving into the water.

In Finland, the eider population is significant, particularly along the Baltic coast. The birds play an important role in the marine ecosystem. Historically and currently, the collection of eiderdown has been a traditional practice in coastal communities, though it is carefully regulated to ensure the welfare of the birds and the sustainability of the population. The term "koskeli" might also be used more broadly in certain dialects to refer to other diving ducks, but its primary association is with the common eider.