Découverte de l'Observatoire de la Réserve Naturelle Régionale du Bassin de la Bièvre - Journées du Patrimoine 2026
September 20
Antony
Birdwatching & nature trails




A pocket-sized wetland hiding 148 bird species in six hectares. An LPO guide helps you spot everything from shy water rails to the elusive bittern at this former flood basin turned biodiversity hotspot.




A pocket-sized wetland hiding 148 bird species in six hectares. An LPO guide helps you spot everything from shy water rails to the elusive bittern at this former flood basin turned biodiversity hotspot.
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