What is this duck - 5-06

Spotted this duck with her ducklings on the river and don't know what it is. She is smaller than the mallard. Please help!

[Graham Thresher]

A fantastic capture.

[Rosie Kind]

Lovely capture - Fav. Is this a Gadwall?

[Beryl Lloyd]

No idea but a lovely shot

[alta]

This is cute! Such a lovely sight to see!

[Emilie Cartoun]

Beautiful!

[Katia]

Can it get any sweeter? :D