Two unknown ducks with a male mallard on an ornamental lake.
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They look a bit like the Saxony breed shown here (if you scroll down)...
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Thanks a lot Ophrys. I thought that they might be mallards, (but I didn't want to preempt people by putting it down as a possible ID). I think you've hit the nail on the head with the Saxony breed. Thanks for the website link - will certainly look at it again.
Lat/Lng: 48.4001, 2.6995