Swedish Black duck - Anas platyrhynchos domesticus
Family - Anatidae
Another of the many domesticated forms of the Mallard duck, the Swedish Black duck is thought to have originated from Sweden (Swedish Pomerania, what is now modern Germany and Poland) in the middle 1800's. Similar in size to a Mallard they are an overall black with a green irridescent sheen, white neck and bib and a black beak. Males ♂ at 3-4Kg (6.6-8.8lb) are slightly larger and heavier than females ♀ at 2.5-3.5Kg (5.5-7.7lb). The white neck and bib can be very variable, both in size and "whiteness" with some being heavily marked with black splots. They are a hardy, strong duck with good foraging ability. There is another form of "Swedish" duck, the Swedish Blue and currently there is some discussion as to the correct linaege of the Swedish Black and the Swedish Blue ducks. Swedish Blues are heterozygous for colour where two Swedish Blue ducks will produce 25% black, 50% blue (slate grey / bluish plumage) and 25% silver coloured offspring. Swedish Black ducks are homozygous or "true" in that they always produce black offspring. Both forms are listed as endangered in Sweden and America.
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