White stripe over the eye.
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I used to do regular trips to Crete, where at this time of year flocks of these would rest in the bays on the south coast in the evening...hundreds at a time. Fantastic little ducks and always a thrill to see and to listen to the males' odd little croaky call.
You've got a female there, too, haven't you?
My Flickr photos...
I think it is a female too - there were several pairs around.
Didn't hear any calls though, I will listen out for that if I see them again.
Always nice to see something new and unexpected. I saw my first stoat today too but I wasn't quick enough to get a photo!
Lat/Lng: 50.944266388889, -0.494875
OS grid ref: TQ058171