Welsh Harlequin Ducks join the flock - Silver vs Gold

Things have gotten a lot noisier around here lately with the addition of 37 Welsh Harlequin Ducks. If you are unfamiliar with the Welsh Harlequin, they are arguably the most beautiful of all domestic ducks. They are descendents of Khaki Campbells rivaling them for productivity as well as noise.  The story of their history is available most anywhere online, so I'll skip that part. The brief history of my flock is that I bought all these from two different people that raised them from mail order ducklings. The first group was about 7-8 months old from Strombergs. I had 9 drakes and 8 ducks along with a lovely pair of Khaki Campbells that I soon sold. The second group was twenty 2 year old ducks from a lovely farm a couple hours north. These were from Metzer Farms, CA.
What I've got for you today is a few pictures and video describing the difference between the "gold" and "silver" color variations in Welsh Harlequins. Metzer Farms breeds only the silver, so all my new girls are silver. But the batch from Strombergs has both gold and silver. Silver seems to be the preferred coloration, and I think I would have to agree. The silver is more striking in my opinion. But I am just not ready to give up the softer gold.  The difference may seem slight at first, but once you see it, it becomes very obvious! So enjoy my little study of precious metals, er... ducks. ;)

Silver drakes have emerald heads, goldens' are almost black.

Silver ducks are more gray flecked, golds are more fawn.

 Both ducks and drakes of the silver variety have a bright iridescent blue wing speculum. On the goldens it is bronze, though the bronze may have a greenish flash if the light hits it right.

Here's the video clip!  See how quick you can label all the golds and silvers!