Ducks - where do they live?

[Robin Orton]

The last two mornings I've seen mallards - three males and a female, I think - grazing in Baxter Fields, in upper Sydenham. Presumably they are based in a pond somewhere not too far away, but I can't think where that might be. Anybody got any ideas?

[leenewham]

Have they moved in with Sir Peter Viggers?