The reserve occupies a former salt-production site that was abandoned in the 20th century, leading to natural re-wilding.
It is an internationally significant RAMSAR site, recognized for its importance to waterfowl.
The Atlantic flyway route passing through the reserve connects nesting grounds in the Arctic to wintering areas in Africa.
Winter populations of birds often exceed 30,000 individuals, including brent geese and grey plovers.
The site acts as a natural carbon sink due to the extensive sediment accumulation in the salt marshes.
La Réserve naturelle nationale de Lilleau des Niges is a 220-hectare protected wetland area located at the northern tip of the Île de Ré. It serves as a crucial stopover point for thousands of migratory birds navigating the Atlantic flyway. The landscape is defined by a mosaic of former salt marshes, mudflats, and reed beds that provide specialized habitats for diverse species. It is managed by the Ligue pour la Protection des Oiseaux (LPO) to monitor biodiversity and facilitate environmental education. The Maison du Fier acts as the reserve’s primary visitor center, housing exhibitions on the local geology and ecological history. Visitors navigate the area via a network of footpaths and cycle tracks that cross the salt pans. The reserve is uniquely positioned between the Fier d'Ars bay and the Atlantic Ocean, creating a shifting brackish environment.
The raised observation deck near the salt marshes offering panoramic views of the wetlands and the Fier d'Ars bay.
Bring high-quality binoculars or a spotting scope, as the primary wildlife viewing areas are often located at a distance from the main trails.
Observe from the marked observation blinds to minimize disturbance to nesting or resting birds.
Check local tide tables, as bird activity levels shift significantly between high and low tide when mudflats are exposed.
Do not attempt to access the mudflats or salt pans outside of designated areas, as the terrain is soft and prone to trapping visitors.
The Maison du Fier visitor center operates seasonally; check for potential closures during the off-season winter months.
Stay strictly on marked paths to protect fragile nesting grounds; maintain silence near observation points; dogs must be kept on a leash or are restricted in specific areas.
