The Catcott Complex is a substantial reserve run by Somerset Wildlife Trust. It has several fine hides and a number of walks around marshes and woods.
Catcott Lows is an area of stubby vegetation during the summer but floods during the winter. When flooded it takes on large numbers of ducks and wildfowl. You can occasionally see some raptors like peregrine and harrier in the winter and many buzzards in the summer.
The other side of the lane is Catcott Heath which has marshes and lakes with the wildlife associated with them. There is a super tower hide there looking down onto the lake.
Behind that is a woodland walk. The wet wood has had a boardwalk installed to make a visit much easier and pleasant.
You can use this site map linked at the top which is very up to date or you can use the links below to download the SWT leaflet of the area.
Photos from around the Catcott Complex and Catcott village can be found here.
A gallery of Catcott reserve and facilities only are here.
All wildlife seen at Catcott is here.
And specifically of: Birds, Insects, and Plants.