Sarcelle d'hiver
It is the premier UK site for breeding black-necked grebes and a stronghold for the willow tit, and other breeding birds include little grebe, great crested grebe, shelduck, Eurasian teal, Northern shoveler, water rail, common cuckoo, common kingfisher, common grasshopper warbler and Eurasian reed warbler. Woolston Eyes also supports nationally important wintering numbers of Northern shoveler, Eurasian teal gadwall and common pochard. There are 12 species of herpetofauna recorded, including sand lizard, smooth snake, natterjack toad and all three native British species of newt. It is also home to 21 species of Odonata, dragonflies and damselfies, out of 58 species found in Britain, as well as 26 species of butterfly.