Well, she does have some Silver Appleyard wing characteristics. Looking at the picture of Silver Appleyard wings in Ashton, they show that Silver Appleyards have, above the blue of the speculum, first a band of white then a band of black. No other breed shown in Ashton shares this characteristic. In the picture below, you can see that her wing does in fact show first a good band of white above the speculum and then black.
On the other hand, she is a Holderread rare runner duckling, and I've never heard that he was trying to breed Appleyard runners. On the contrary, in his book he states that they do not exist - that no runner has the Restricted allele - and therefore that none of them are true Appleyards. In fact, she was born with trout colors, not Restricted duckling colors.
It is possible, though unlikely, that she has M+/MR. Although most references I have found say Restricted is always dominant, Ashton shows pictures of M+/MR ducklings that are dark in color, and it states that in their experience Restricted is not always strictly dominant. I would like to line breed her, if I can. That might shed some light on her genetic heritage!
I am so curious...
Edited by Duck Hill - 2/3/16 at 12:13pm