Had us scratching our heads and consulting the guide books.
It had most of the characteristics of a Ruddy Shelduck but it wasn't, grey head ? ...... Hmmmm.
This is a pair of Ruddy Shelducks that I photograped at Slipton last year
The staff at the visitor center held the answer ..... its a South African ( Cape ) Ruddy Shelduck and an escapee from a wildfowl collection.
Still, an interesting experience !.