Can anyone identify this duck for me?

I have seen this duck at Priory and after looking in my bird book, I am wondering whether it is a gadwall. Please put me out of my misery and let me know whether I am right.

Thank you for getting all 3 of my images on PP yesterday and for all your kind comments and Favs. It is always much appreciated.

I am keeping my fingers crossed that the internet doesn't go off yet again. It is a real problem at the moment.

[carol white]

A lovely capture. You may be right, unless it's a hybrid. Fav!! 😀

[Day by day]

Indian Runner Duck by the look of it.

[Steve Jacob]

It's an Indian Runner Rosie. fav

[Rosie Kind]

@stevejacob How interesting and I have never heard of them and it’s not in the bird book I have. Thanks for the ID

[Rosie Kind]

@hazydaze Thanks. I have never heard of them

[Louise & Ken]

Looks like it's Mama had a night out with a Mallard!

[Rick]

Great shot.