Chickendeal~
Mossy is when on the blue or black body plumage (usually down the back and on the wings) you see a brownish kind of stippling. In some lines of Marans the mossy disappears as they mature and in some lines of Marans it does not go away. I personally will not use a bird that is mossy for breeding. Many believe that it is linked to another variety of Marans or another breed that has been crossed into the Black Coppers.
I have had a few of them when I had birds here from other lines and what I can say is that from my experience the females grow out to be lacking in copper most of the time and have lots of brown underfluff....but they do lay some nice colored eggs. The males I have had have grown out to be too light in the hackles, like brassy and the males I grew out and the one photo'd below matured with a cinnamon wing triangle and white in the hackles. The cinnamon color in the wing triangle told me there was Wheaten crossed into the mix somewhere in the genetic background of that particular line.
Here is a photo of some mossiness on a male that I had that I from a line that produced all sorts of unfavorable traits.
Mossy is when on the blue or black body plumage (usually down the back and on the wings) you see a brownish kind of stippling. In some lines of Marans the mossy disappears as they mature and in some lines of Marans it does not go away. I personally will not use a bird that is mossy for breeding. Many believe that it is linked to another variety of Marans or another breed that has been crossed into the Black Coppers.
I have had a few of them when I had birds here from other lines and what I can say is that from my experience the females grow out to be lacking in copper most of the time and have lots of brown underfluff....but they do lay some nice colored eggs. The males I have had have grown out to be too light in the hackles, like brassy and the males I grew out and the one photo'd below matured with a cinnamon wing triangle and white in the hackles. The cinnamon color in the wing triangle told me there was Wheaten crossed into the mix somewhere in the genetic background of that particular line.
Here is a photo of some mossiness on a male that I had that I from a line that produced all sorts of unfavorable traits.