Loch Lomond National Nature Reserve

Loch Lomond National Nature Reserve spreads across 430 hectares at the southeastern end of Loch Lomond in West Dunbartonshire and Stirling. It includes five islands—Inchcailloch, Clairinsh, Torrinch, Creinch and Aber Isle—along with woodlands and wetlands beside the Endrick Water. The reserve is managed jointly by NatureScot, RSPB Scotland and Loch Lomond and The Trossachs National Park, with each partner handling different parts of the site. Clairinsh became the first section declared a national nature reserve in 1958, and the reserve has grown through three later extensions. Its habitats range from Atlantic oakwoods and flood-plain wetlands to reed beds and wet meadows untouched by drainage schemes. The Highland Boundary Fault runs through the area, creating sharp contrasts between highland and lowland environments. The reserve supports nearly 400 kinds of vascular plants, including rare species such as elongated sedge and mudwort. Birdlife is abundant, with Greenland white-fronted geese and greylag geese wintering here in large numbers. Breeding birds include pied flycatchers, common grasshopper warblers and Eurasian skylarks, while ospreys hunt over the Endrick Mouth. The Endrick Water holds river lamprey that stay in freshwater, a behaviour unique in Britain, and otters live along the loch shore. In 2023 a family of beavers was released under licence to help restore wetland habitats. The reserve also holds populations of powan in the loch and brook lamprey and Atlantic salmon in the river. Inchcailloch draws most visitors and can be reached by ferry from Balmaha. The island shows traces of past settlement, including a 13th-century church and old drying kilns. Clairinsh’s oakwoods contain trees aged between 21 and 165 years and include the remains of a crannog offshore. Creinch’s shoreline supports globeflower and columbine, while Torrinch’s woods are rich in birch and aspen. Aber Isle is known for its hornbeams and guelder roses. Paths, a picnic area, campsite and toilets on Inchcailloch make it the main focus for visitors exploring the reserve’s natural and cultural heritage.