On the outskirts of Rickmansworth, the River Colne runs through mature gravel pits and defunct watercress beds. Established willows and alders alongside a canal create a diverse habitat for waterfowl including Goosander and Smew and we might see Bearded Tits and Bittern

Facilities: Café and toilets.. Cost £3.00

https://www.hertswildlifetrust.org.uk/nature-reserves/stockers-lake