Lays many eggs
Early humans used the mallard as a semi-domesticated provider of eggs and meat. The Swedish Yellow duck quickly became popular, thanks in part to the fact that it lays a lot of eggs. A single duck can lay 150 to 200 eggs a year!
Yellowish-brown to yellowish-white
The duck’s yellow colouring is constantly inherited, and can range from yellowish-brown to yellowish-white. It is the mid-yellow variant that is sought after. The male duck has a light pale brown colour on its head and throat, but is otherwise yellow. The female duck’s plumage is uniformly yellow, but may also have mixed shades.