The North Colonsay and Western Cliffs SPA is located on the island of Colonsay in the southern Inner Hebrides off the west coast of Scotland. It comprises the northern promontory of Colonsay and a 2 km section of cliffs on the western coast. The hills rise to about 140 m above sea level and the cliffs include some almost sheer sections up to about 100 m in height. The whole area is craggy, and the mainly acidic rocks support dry and wet heath over the northern hills. On the west coast in particular, there is a strong influence of sea spray, giving a herb-rich sward. Sand dunes, including the 60 m high Leac Bhuidhe dune, are found in two areas in the north and are rich in characteristic plant species. The site is of importance for breeding seabirds, including gulls and auks. These feed outside the SPA in surrounding waters as well as further away. Chough Pyrrhocorax pyrrhocorax is also a resident species, breeding on cliff areas and foraging widely. They depend on the diverse mix of habitats present within the site and their continued low-intensity agricultural management.