Initially they are black in color, but progressively lighten to white by the end of the season
The only duck I can think of is a cayuga. but it isn't that often that they get a green pigment in their feet.
any white on a cayuga duck is a disqualification in showing
they are used for egg and meat production as well as an ornamental bird
It is white eggs
No it is not. In drakes especially, the tip will have olive color. In the APA Standard of Perfection, this is acceptable.
Most duck eggs are larger than a chicken egg. PoultryTalk's Response: Smell the egg, duck eggs have a scent chicken eggs dont. Also most are glossy and sometimes they are a greenish color. Also duck eggs are usually thicker.
cayuga ducks lay approximately 100-150 eggs per year if properly cared for.
28 days
Large, pale white---and they are larger than chicken eggs and have thick shells
it depends on the type of duck egg you have. i had a cayuga duck, it was incubated at 99 - 99.5 degrees for approximately 28 days.
The Black Swedish duck would match that description, as would the Cayuga.
Only the females will accept Cayuga ducklings, and if she has ducklings of her own, and the ducklings that you have aren't part of her family, she will most likely just peck them away from her and her babies.