Cock Marsh, Natural reserve and wetland near River Thames in Berkshire, England
Cock Marsh is a nature reserve and wetland near the River Thames in Berkshire. The site features steep chalk slopes, varied meadow habitats, and several silted pools positioned at the base of grasslands close to Cookham village.
The site has been used for grazing since 1272 and was transferred to the National Trust in 1934 by local residents. This long history of agricultural use has shaped how the landscape appears and functions today.
The place takes its name from roosters that once roamed the area, and today visitors can observe cattle and horses grazing across the land. This traditional pastoral use shapes how the landscape looks and which plants and animals thrive here.
Visitors can explore the grounds on foot and observe various bird species visible year-round. The different grassland sections are easily accessible and offer good opportunities for birdwatching and nature observation.
The area hosts one of England's rarest plants: Brown Galingale, which grows in only a handful of locations across the country and is particularly abundant here. This uncommon plant makes the site especially valuable for botanists and nature enthusiasts.
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