Hmmm I have the male half. I figured he is just a mix.I was hoping mine was female and I would call him Lacey because he reminded me of a lace tablecloth but he was male and I call him Hawkeye
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now that he is molting he has lost A LOT of color and resembles your duck. Don't have a recent photo of him

Ok,,,,,, got it Silver Appleyard and I would LOVE a few females.
He is a good male duck as he keeps the girl in line finding the ones who have strayed off and bringing them back to the flock. His sexual Appetite earned him the name of Hawkeye (after the M.A.S.H. womanizer and sometimes my hubby calls him Tiger :~)
tanya

They appear to be Australian Spotted Ducks.

I didn't realize this was so old a post. I hope you're still there. Here's a link for all interested.

Here is a link that might be useful: Australian Spotted Ducks from the Feathersite.com