Stocker’s Lake is one of the oldest gravel pits in the Colne Valley with nationally important numbers of wintering birds.
Spring: Chiffchaff, Cetti’s warbler, heron, little egret, swallow.
Summer: Common tern, Daubenton’s bat, purple loosestrife,
southern hawke, Egyptian Geese
Autumn: Great crested grebe, osprey,red admiral.
Winter: Goldeneye, kingfisher, shoveler, siskin, redpoll, widgeon.
[ Cassiobury Park LNR, Broadwater Lake, Stocker’s Lake, Rickmansworth Aquadrome, Long Deans, Longspring Wood , Alpine Meadow, Stocking Springs Wood, Hilfield Park Reservoir, Tring Reservoir, Cemetery Pond life, Herons, Woodland ]