Cwm Colhuw
A coastal landscape supporting wildlife, heritage and people









Cwm Colhuw is a coastal site within the Glamorgan Heritage Coast, supporting a mosaic of calcareous grassland, ash woodland and scrub. Located on the southern slope of the Afon Colhuw, the site has evolved over time from open grazed pasture into a more scrub- and woodland-dominated landscape. Part of the reserve is also designated as a Scheduled Ancient Monument, reflecting its historic as well as ecological significance.
The site supports a viable mosaic of habitats capable of sustaining a rich assemblage of species. Scrub and hedgerows provide nesting habitat for birds such as bullfinch, goldfinch, linnet and yellowhammer, alongside summer migrants including willow warbler and whitethroat. Kestrel breed on the adjacent cliffs and use the grassland for hunting, with peregrine regularly recorded, while house martins and fulmars nest along the coastal edge. The scrub and grassland also provide habitat for foxes, hedgehogs and reptiles such as slow worm.
Why it mattters
Cwm Colhuw demonstrates clear biodiversity value, with a mosaic of habitats in recovering or good condition and a notable community of waxcap fungi. A high-quality baseline of evidence provides a reliable indication of the site's condition, supported by a standardised monitoring approach that enables comprehensive evaluation of habitat structure and function. Habitat quality, particularly of grassland features, is supported through a clear and logical management framework linking vision, objectives, monitoring and actions.
Well governed and supported by long-term stewardship, the site also places a strong emphasis on nature connection and community engagement. Despite its relatively small footprint, Cwm Colhuw presents clear merit for Naturfa status and demonstrates how smaller sites can contribute meaningfully to nature recovery.
Get in touch
Interested in learning more about recognised sites or exploring case studies?
Contact us at 30x30inWales@gov.wales