Swedish Blue

The Swedish Blue (Swedish: Svensk blå anka)[5] or Blue Swedish is a Swedish breed of domestic duck. It emerged during the nineteenth century in what was then Swedish Pomerania, now divided between north-west Poland and north-east Germany.[6][7]

Swedish Blue
Swedish Blue ducks, with two blue birds on the right and splash and black forms to the left
Conservation statusFAO (2007): critical[1]
Other names
  • Swedish: Svensk blå anka
  • Blue Swedish
  • Swedish[2]
Country of originSweden
Traits
Weight
  • Male:
    3–4 kg
  • Female:
    2.5–3.5 kg
Classification
APAmedium duck[2]
EEyes[3]
PCGBheavy[4]
  • Duck
  • Anas platyrhynchos domesticus

History

The Swedish Blue emerged during the nineteenth century in what was then Swedish Pomerania, now divided between north-west Poland and north-east Germany; the first documented mention is from 1835.[6][7] Some birds were exported to the United States in 1884, and it was added to the Standard of Perfection of the American Poultry Association in 1904 as the "Swedish", with the single color variety "blue".[2][7]

The population of the Swedish Blue in Sweden consists of only 148 breeding birds; its conservation status world-wide was listed as "critical" by the Food and Agriculture Organization of the United Nations in 2007[1] and in 2014 was listed as "endangered-maintained" in Sweden.[8] No data is reported from Ireland, the only other country reporting the breed.[9] It is listed as "watch" by the American Livestock Breeds Conservancy.[7] The Blue Swedish is not a popular exhibition breed either; specifics on wing color make the breed challenging to perfect and often discourage breeders and hobbyists from owning the breed.[10]

Characteristics

The Swedish Blue is a medium-sized bird: the male weighs between 3–4 kg and the female usually weighs 2.5–3.5 kg. Swedish ducks are regularly compared to the body type of Cayugas and Orpingtons, however Swedish should have shorter bodies with more width compared to what is seen in those two breeds.[10] Blue Swedish have medium, oval-shaped heads.[11] Color should be a consistent blue-slate with darker lacing around the border of each feather. Drakes are generally darker than ducks.[11] The only part of the birds that is not some variety of blue is the white, heart-shaped bib found on the breast, extending up the front of the neck terminating towards the mandible of the bird.[11] It is distinguished from the Pomeranian Duck by its white primaries.[6]

The blue color is due to heterozygosity in a dilution gene. As in other blue poultry such as the Blue Andalusian breed of chicken, if a two blue birds are bred, the young are, in the usual Mendelian proportion:

  • 25%: a homozygous form, black where the blue should be
  • 50%: heterozygous, the typical blue
  • 25%: the other homozygous form, splashed or silver with combinations of blue and black and white.

Thus only 50% of the offspring of a blue-blue mating are blue. If the black and splash homozygous forms are bred together, the offspring are all heterozygous and thus the desired blue color.[12]:36, 352

Use

Ducks lay some 100–150 white or tinted eggs per year of 80–90 g weight.[7]

gollark: Where it shines is in performing random useful tasks which there isn't dedicated hardware available for, linking together disparate systems (much more practically than redstone), working as a "microcontroller" to control something based on a bunch of input data, and entertainment-/decorative-type things (displaying stuff on monitors and whatnot, and music with Computronics).
gollark: For example, quarrying. CC has turtles. They can dig things. They can move. You can make a quarry out of this, and people have. But in practice, they're not hugely fast or efficient, and it's hard to make it work well in the face of stuff like server restarts, while a dedicated quarrying device from a mod will handle this fine and probably go faster if you can power it somehow.
gollark: I honestly don't think CC is particularly overpowered even with turtles. While it can technically do basically anything, most bigger packs will have special-purpose devices which are more expensive but do it way better, while CC is very annoying to have work.
gollark: Out of all the available APIs in _G the only ones I can see which allow I/O of some sort directly and don't just make some task you can technically already do more convenient are `fs`, `os`, `redstone`, `http`, and `term`. You can, at most, probably disable `http` and `redstone` without breaking everything horribly, and it would still be annoying.
gollark: What other stuff would you disable, anyway? I don't think there's much which isn't just a utility API of some sort which you can disable without more problems.

References
  1. Barbara Rischkowsky, D. Pilling (eds.) (2007). List of breeds documented in the Global Databank for Animal Genetic Resources, annex to The State of the World's Animal Genetic Resources for Food and Agriculture. Rome: Food and Agriculture Organization of the United Nations. ISBN 9789251057629. Accessed August 2014.
  2. APA Recognized Breeds and Varieties: As of January 1, 2012. American Poultry Association. Archived 4 November 2017.
  3. Liste des races et variétés homologuée dans les pays EE (28.04.2013). Entente Européenne d’Aviculture et de Cuniculture. Archived 16 June 2013.
  4. Breed Classification. Poultry Club of Great Britain. Archived 12 June 2018.
  5. Breed data sheet: Svensk Blå Anka/Sweden. Domestic Animal Diversity Information System of the Food and Agriculture Organization of the United Nations. Accessed August 2014.
  6. Ducks. Poultry Club of Great Britain. Archived 9 November 2018.
  7. Swedish Duck. Pittsboro, North Carolina: The Livestock Conservancy. Accessed June 2018.
  8. Transboundary breed: Swedish Blue. Domestic Animal Diversity Information System of the Food and Agriculture Organization of the United Nations. Accessed August 2014.
  9. Breed data sheet: Swedish Blue/Ireland. Domestic Animal Diversity Information System of the Food and Agriculture Organization of the United Nations. Accessed August 2014.
  10. Holderread, Dave (2001). Storey's Guide to Raising Ducks. North Adams, MA, USA: Storey Publishing. pp. 64, 65.
  11. Standard Revision Committee; Malone, Pat; Donnelly, Gerald; Leonard, Walt (2001). American Standard of Perfection 2001. USA: American Poultry Association. pp. 312, 313.
  12. Victoria Roberts (2008). British poultry standards: complete specifications and judging points of all standardized breeds and varieties of poultry as compiled by the specialist breed clubs and recognised by the Poultry Club of Great Britain. Oxford: Blackwell. ISBN 9781405156424.
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