The upper, eastern section of the Park, just below Ros Castle, is designated as a Site of Special Scientific Interest (SSSI). It forms part of the large upland SSSI that covers Bewick and Beanley moors, which were designated in 2010. The moorland is home to rare bird life, such as Red Grouse, Hen Harriers and Ravens.

In the spring, Ravens can often be seen crossing the Park as they head over to Cheviot.

In 2023, a Golden Eagle was spotted over the Park. It is thought that it originated from the introductory programme that has taken place in the Scottish Borders. Will it re-appear annually?

Heather moorland within the Park, just below Ros Castle.