Pollardstown Fen

📍 County Kildare, Kildare

🏛️ Attraction

Last updated: 28 April 2026

Overview

Pollardstown Fen lies on the northern margin of the Curragh, about 3 km west of Newbridge in County Kildare. Covering roughly 220 ha, it is the largest extant spring‑fed calcareous fen in Ireland and a designated National Nature Reserve, Special Area of Conservation, Ramsar site and Natura 2000 habitat. The fen is fed by the Curragh aquifer, which supplies mineral‑rich spring water that keeps the peatland alkaline and prevents the usual progression to a raised bog. Visitors access the reserve via a wooden boardwalk that winds through reedbeds, open pools, scrub and a small woodland at the western edge.

History

The fen began to form at the end of the last Ice Age, around 10‑13 000 years ago, when melt‑water filled a glacial hollow left by retreating ice. Over millennia, floating algae gave way to tall reeds and sedges; their dead material accumulated as peat, creating the fen we see today. In the 1960s drainage schemes threatened large parts of the habitat, but conservation action in the 1970s and 1980s secured its future. The state purchased 60 % of the land and declared it a National Nature Reserve in 1986. In 1990 the site gained Ramsar status (site 474), recognising its international importance for wetland biodiversity.

What to See & Do

The boardwalk offers a dry, level path that is suitable for families, birdwatchers and anyone interested in botany. Highlights include:

  • Flora – Dominant species are black bog rush and saw‑sedge, a vegetation type almost unique to Ireland. Rare orchids such as the marsh helleborine, narrow‑leafed fly orchid and marsh orchid bloom in the spring and early summer. Other notable plants are western bladderwort, common butterwort, round‑leaved sundew and the arctic‑alpine moss Homalothecium nitens.
  • Invertebrates – The fen supports a rich assemblage of dragonflies, damselflies and butterflies, including the protected marsh fritillary. Snails such as Vertigo geyeri and Vertigo angustior are indicators of the calcium‑rich water.
  • Birdlife – A variety of breeding and migratory birds can be observed from the boardwalk or the bird hide in the southern section. Expect to hear the drumming of snipe, the chatter of reed buntings, the melodic song of sedge warblers and the occasional call of water rail. Waterfowl such as mute swans, herons, little grebes, coots and moorhens frequent the open pools, while winter brings pintail and tufted duck.
  • Mammals and amphibians – Otters, hares, pygmy shrews, common frogs and smooth newts are regular inhabitants of the wetter margins.

Interpretive signage along the route points out key habitats and species, making the walk both educational and immersive. The quiet atmosphere, punctuated by the gentle gurgle of underground springs, offers a rare chance to experience a pristine wetland landscape without the crowds of more commercial attractions.

Seasonal Highlights

  • Spring (March‑June) – The fen comes alive with a carpet of orchids, especially marsh helleborine and narrow‑leafed fly orchid. Early butterflies such as the small copper begin to appear.
  • Summer (July‑August) – Dragonflies and damselflies are at their peak, and the marsh fritillary butterfly can be seen fluttering over the reedbeds.
  • Autumn (September‑October) – Migratory waders and waterfowl start to arrive, providing excellent bird‑watching opportunities.
  • Winter (November‑February) – The pools attract wintering ducks such as pintail and tufted duck, and the occasional kingfisher can be spotted hunting along the water’s edge.

Getting There

Pollardstown Fen is accessed from the road that runs between Newbridge and the Curragh. Parking is available at the reserve entrance and is free for visitors.

  • By car – From Newbridge, follow the signs for the Curragh and look for the reserve’s car park on the left-hand side of the road.
  • Public transport – Check local bus timetables for services to Newbridge; from there a short taxi ride or a walk of about 3 km will bring you to the fen. (Exact bus routes and nearest train stations should be confirmed.)

Practical Information

  • Opening: Open year‑round; no admission charge.
  • Parking: Free car park at the main entrance.
  • Facilities: A bird hide is available in the southern section. (Confirm presence of toilets.)
  • Accessibility: The boardwalk is level and suitable for strollers; verify full wheelchair accessibility.
  • Guidelines: Stay on the boardwalk, keep dogs on a lead (if permitted), and do not pick plants or disturb wildlife.
  • Safety: Wear sturdy shoes, especially after rain when some sections can be slippery.

Nearby Attractions

If you have extra time, consider visiting other natural sites in County Kildare:

  • Ballynafagh Lake – a wildfowl sanctuary and historic reservoir.
  • Bog of Allen – one of Ireland’s largest raised bogs, offering boardwalk walks and bird‑watching.
  • Donadea Forest Park – woodland trails, a lake and historic ruins.

Contact & Useful Links

Coordinates: 53.1835908 N, 6.8457528 W