© Steve Marshall / Wild Future

Welcome to the Friends of Stocker's Lake Website

This website is owned and maintained by Friends of Stocker’s Lake (FoSL), a registered charity. FoSL exists to :

  1. - conserve, safeguard and enhance Stocker's Lake as a Local Nature Reserve
  2. - help and extend the scope of the work of the warden at Stocker's Lake
  3. - foster public support for and appreciation of Stocker's Lake as a local nature reserve.

Stocker's Lake, near Rickmansworth just inside the M25, is bordered on one side by the river Colne and on the other by the Grand Union canal. It is a place of great beauty and it supports a huge variety of wildlife, especially birds, particularly winter wildfowl. It is owned by Affinity Water and managed by Herts & Middlesex Wildlife Trust, actively supported by local people who are the Friends of Stocker’s Lake.

Within this website you will find details of organised walks and other events on the reserve, news of interesting recent sightings of birds, details of how to join FoSL for a mere £5 per year, and much more.


Work Party - 06 12 20

This event is now by invitation only due to current Covid restrictions. 

All events ...

Covid-19 restrictions unfortunately led to cancellaton of this year's public Butterfly and Dragonfly Walk (amongst others). However two FoSL members, father and son Rob and Alex Liddle, who are great at identifying these insects, agreed to report back on a private walk around the lake. You can read their report here or else download an illustrated version from here.

August 2020 

In common with so many other public events, our wildflower walk around the lake which had been scheduled for June 21st unfortunately had to be cancelled due to Covid-19. However on July 1st Janet Lowndes and Linda Ascroft walked around the lake and listed the various wildflowers they identified.

Good news - the lovely Dexter cattle which we had on the reserve last summer are due back in early June. They do great conservation work by encouraging growth of wildflowers in the three meadows which we created for them especially. So we await their return with eagerness.

Our heron nest cameras have recently been capturing some great images and video clips of the nesting season in progress. A selection of images has now been put on in the gallery section of this website, starting at page 2.

Wildlife at the lake seems currently to be thriving whilst humans lie low due to the Covid-19 lockdown. Fewer visitors means birds and wildlife can move into spaces they might previously have avoided.

Recent Sightings

27th - circa 25 Swallow, 6 Swift, Cetti's Warbler (heard)

13th - Kingfisher

12th - 2 Common Tern

29th - 2 Kingfisher (along the river Colne), 8 Common Tern

27th - Barnacle Goose (lone bird with 200+ Canada Goose flock), 2 Common Sandpiper, 8 Red-crested Pochard

9th - 13 Common Tern (min 9 adults plus 4 chicks on raft plus other adults flying), 7 Egyptian Goose, 5 Red-Crested Pochard, Garden Warbler, Blackcap, Chiffchaff, Sedge Warbler, Reed Warbler (heard)

6th - 18 Common Tern (13 adults & 5 chicks on tern raft), Goldeneye (female), Cetti's Warbler

1st - Common Sandpiper

27th - Kingfisher (on River Colne), 2 Cetti's Warbler, 16 Common Tern (adults plus 4 chicks on Tern raft), 9 Sand Martin, Red-crested Pochard, 9 Egyptian Goose, 2 Cetti's Warbler

19th - c.40 Swallow (over lake feeding and resting), 2 Kingfisher (one with food visiting nest site), 2 Cetti's Warbler

16th - 3 Cetti's Warbler (calling), 6 Egyptian Goose, circa 28 Common Tern

12th - Swift, 8 Swallow, 2 Reed Warbler, 2 Cetti's Warbler, 5 Egyptian Goose, Kingfisher, 16 Common Tern (8 occupied nests on rafts), 2 Cetti's Warbler

8th-10th - Marsh Warbler, on far bank of River Colne

8th - Kingfisher, 4 Cetti's Warbler

7th - 6 Egyptian Goose, 26 Common Tern

3rd - 4 Reed Warbler, 6 Sedge Warbler, 12 Common Tern (on new Tern raft), 3 Egyptian Goose

2nd - 6+ Cetti's Warbler (heard), Red-crested Pochard,3 Egyptian Goose, Reed Warbler, 6+ Swallow, 3 Kingfisher (near Kingfisher bank), Willow Warbler


Previous sightings and reports ...