The name in English is a bit of a misnomer; they are actually more buff or yellowish-brown coloured than yellow coloured.
Males will weigh 6.6 to 7.7 pounds (3.0 to 3.5 kg); females 5.5 to 6.6 pounds (2.5 to 3.0 kg.)
They are a bit less meatier than Swedish Blue Ducks, but are somewhat a better egg layer. Females can lay up to 130 eggs a year.
This breed is currently (2011) considered rare.
History Notes
The Swedish Yellow Duck was developed in Skåne province in southern Sweden by a man named Måns Eriksson. The breed was probably developed from Swedish Blue, though a few people speculate there must have been a khaki-coloured Campbells Duck as well.
The birds were thought to be extinct in 1977, when a small flock of the birds were discovered in a village named Billinge.
The number of birds numbered only 145 in 2004.
Language Notes
Called “Svensk gul anka” in Swedish.
Sources
Baines, Stephen. The Swedish Yellow Duck. 16 September 2007. Retrieved May 2011 from http://www.alledal.nu/content/view/64/34/lang,en/.