This is a huge lake with a local bowling club and park, there was not much knocking about I saw a Grey Wagtail near the bowling club, Kingfisher whizzing across the lake and 8 Great Crested Grebe and a load of Mallards. On the way though through the woods I did see a lovely Roe Deer jumping through the forest. Worth a visit but only of you want a nice walk or something rare turns up!
www.wiltshirebirds.co.uk - Details of some good birding sites in Wiltshire are provided here, a great site with good up to date sightings.