The reserve sits on the site of a former watercress farm, which shaped the current layout of the ponds and channels.
The water in the reserve originates from the chalk aquifer, keeping it consistently clear and rich in minerals.
It is one of the few places in the region where you can regularly hear the 'reeling' song of the grasshopper warbler.
The reserve has a dedicated viewing screen specifically placed to overlook the most active parts of the reedbed.
It is a key site for otter sightings, which are frequently spotted in the main marsh area.
RSPB Fowlmere is a freshwater wetland reserve featuring reedbeds, chalk streams, and diverse woodland habitats. The site serves as a vital refuge for breeding warblers, including sedge, reed, and grasshopper warblers, alongside wintering wildfowl. Visitors can traverse the reserve via a network of footpaths that provide access to multiple bird hides and a viewing screen. The reserve is notable for its natural chalk spring, which maintains a stable water temperature year-round, influencing local flora and fauna. Management efforts focus on maintaining the reedbed quality to support rare species like the bittern and water rail. Several ponds and open water sections offer opportunities to observe dragonflies and amphibians during warmer months.
The main bird hide overlooking the reedbed offers the most consistent wildlife photography opportunities.
Wear waterproof footwear, as the paths can become muddy during wet weather.
Bring binoculars, as the main bird activity often occurs at a distance from the walking paths.
Check the notice board at the entrance for recent bird sightings posted by other visitors.
Do not wander off the marked trails, as this can damage delicate wetland habitats and disturb nesting birds.
Keep noise levels low to avoid disturbing the wildlife; dogs must be kept on a lead at all times.