The reserve is situated on the floodplain of the River Arun, which regularly inundates the meadows in winter to attract large flocks of ducks and swans.
It is one of the few remaining locations in the UK where nightingales can still be heard singing in significant numbers during the spring.
The meadows are managed through controlled grazing with cattle and sheep to maintain the specific grass height required by ground-nesting birds.
The site includes 'The Hanger', an area of ancient woodland that offers a distinct habitat contrast to the valley floor wetlands.
It acts as a critical stopover point for migratory birds moving along the Arun Valley flyway.
RSPB Pulborough Brooks is one of the most important lowland wet grassland sites in the UK, located within the Arun Valley. The reserve encompasses a mix of reedbeds, woodland, and wet meadows that support internationally significant populations of wintering wildfowl and breeding waders. Key species observed include nightingales in spring, peregrine falcons, and lapwings. The site features an extensive network of circular trails that traverse both the sheltered woodland slopes and the open, flood-prone valley floor. A raised boardwalk provides access to wetland areas that would otherwise be impassable. The visitor centre, Uppertons Barn, serves as the main entry point and provides elevated views across the reserve. Seasonal flooding is a functional part of the landscape management, creating vital habitats for migratory birds. The site is a designated Site of Special Scientific Interest (SSSI).
The elevated viewing platform at the visitor centre offers a panoramic vantage point over the entire wetland expanse.
Bring high-quality binoculars or a spotting scope, as the best bird activity is often far from the main paths.
Check the reserve website for 'flood status' updates before visiting, as heavy rain can render certain low-lying trails inaccessible.
Visit the viewing screens, which offer low-profile perspectives of birds without disturbing them.
Ignoring footwear requirements; paths can be extremely muddy or flooded, making waterproof walking boots or wellingtons essential.
The visitor centre and cafe may operate on reduced seasonal hours during the winter; check before travel.
Stay on marked trails to protect ground-nesting birds; keep dogs on a short lead at all times.