These are in captivity at Martin Mere Wildfowl Trust Reserve and I don't really like to see birds in captivity. I think they're probably part of a breeding program. I'd like to go there again some time and when I do I'll ask a few questions about the work they do. I do like the way they're all lined up looking at their reflections.
Looks like they are all waiting for the starting gun to all jump in at once. Cute capture. Great reflection and lineup of the ducks. They look like they are posing for you.