I just hatched three ducklings from my Anconas, and all three are chocolates. The potential parents are: black drake, lavender drake, chocolate hen, black hen. I am pretty sure that two of the babies are the black hen's ducklings, as they both have a very similar pattern (incorrect for the breed - they look more like Swedish ducks) as she does. I don't know whether she carries chocolate, or whether they got chocolate from the lavender drake. And it got me thinking whether lavender x black would be sex-linked. So I'm wondering whether a lavender drake counts as a chocolate drake for the chocolate/black sex-linking. In Holderread's duck book, in the genetics chapter, he says that a chocolate drake over a black hen will produce sex-linked offspring: females will be chocolate, males will be black with a chocolate gene. Now, a lavender duck has the same genotype as a chocolate duck, except that they are heterozygous for blue. So...can you use lavender drakes for sex-linked mating, or does the blue gene throw things off? I am a newbie at this, so I don't know too much about genetics, though I'd like to learn more! One thing I would expect from putting a lavender on a black is that it could produce some blue offspring. So if Chocolate X Black = chocolate females/black males (carry choc. gene) does Lavender X Black = chocolate females/black(blue) males (carry choc gene.)? Or are these two matings not equivalent? Although now I'm a little confused myself...would this mating ever produce any lavenders? If so, would they be males? Thanks for any advice you can give me!