Canada Goose (Hundreds, especially upstream of the causeway)
Greylag Goose (A few mingling with Canada Geese)
Ruddy Shelduck (A presumed escape with Mallards upstream of the causeway)
Gadwall (At least 4 with Mallards on the main reservoir)
Mallard (At least 10 on the main reservoir, more upstream of the causeway)
Grey Heron (One flying along the far shore of the reservoir and another along the dam)
Common Sandpiper (One upstream of the causeway)
Chiffchaff (Several in the willows bordering the river)
Blackcap (A pair around halfway along the edge of the reservoir)
Wren (Lots in the woodland calling)
Robin (Numerous in the wooded areas)
Kestrel (One hunting in the fields by the viaduct (pictured below)