They look like drakes to me because of the dark heads, and those bills aren't going to change color. Yellow, pink, or spotted bills don't change in welshies, and unfortunately it means they shouldn't be bred.
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A= Hannah, a very beautiful silver phase breed standard hen, her bill is black and her head is lightly colored.
B= Honey, a beautiful but flawed gold phase hen, her bill was yellow the day I got her and it never changed
C= Sir. William Wallace Braveheart, a correctly colored but slightly small drake, he had dark plumage as a teenager and the proper dark juvenile bill.
D= Wuza (pay close attention to this one as I believe most of what he went through relates to your ducks as well), my VERY flawed but funny hen turned drake, he had a girl bill the day he was born but it remained yellow and he was supposed to be a girl with a yellow bill. Turns out she (formerly known as hazel) was a he! Hence the name Wuza (all my boys have W names and my girls have H names), he also displayed female plumage until he went through puberty. He feathered out in the juvenile stage with girly white feathers and a darkish head, I assumed it was just another flaw until he made his raspy quack and revealed to me his true identity
after all his mess of color and sound as a baby he actually turned out to be a very nice looking drake!
Some juvenile ducks with yellow bills will get darker bills but usually they don't get dark. I wouldn't recommend breeding them because it hurts the breed standard and I personally have been having a horrible time finding proper welshies
. They are very cute and of course you may breed them if you like (ducklings are such a joy!) but it is something to consider. Hope this helps! -Eve
