Ogmore Estuary The B5424 follows the River Ogmore. There are 2 SSSIs, one for the saltmarsh and the other for the rocks to the south of the river. Various habitats exist, including grazing at Ogmore Moor that sometimes floods, mixed woodland at Merthyr Mawr village and alongside the river. Downstream of Ogmore Castle there is a grassy island at a confluence called Ploran Mawr. There are also dunes, gorse, bracken and a sandy beach.
Early mornings can be best, especially if the weather is fine as the area is a popular spot.
Autumn and winter are best. Waders can also be plentiful and the site boasts Glamorgan's highest ever Little Stint count of 37. Occasionally there are Ruff, Curlew Sandpiper and Greenshank. Nearby at Dunraven Castle a pair of Chough have been regular in recent years although have yet to breed. They often also visit Ogmore.