Invasive Species
Invasive species on Alderney
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Notable Species
Notable species on Alderney
Key Habitats and Species
Key Habitats and Species
Ash
A common tree, ash is familiar to many of us for its autumnal bunches of winged seeds, called 'keys'. It can be found in woodlands and prefers damp and fertile soils.
Key Species: Common Sole
The common sole is a flatfish of ecological and commercial importance and it is one of Alderney’s key species.
Key species: House Martin
A high flier that visits Alderney in spring and autumn. Discover where and when it can be spotted, and why it is a key species of the island.
Key species: Slow worm
Learn more about this unique species, the only reptile found on Alderney. Despite its misleading name, it’s actually a harmless legless lizard that is often mistaken for a snake because of its…
Key species: Northern Gannet
Since the gannets made landfall last week (6 February 2026), we’d love to draw more attention to this charismatic bird of Alderney.
Key species: Egg wrack
This week, we highlight egg wrack, a large brown seaweed on Alderney’s rocky shores.
Key Species: Common Pipistrelle
Learn more about the smallest and most common bat of Alderney
Upland mixed ash wood
Beautiful displays of flowers spread under the gentle shade of unfurling ash leaves in spring, while in winter the abundant ferns and mosses mean these small, rocky woods retain a watery greenness…
Lowland mixed oak and ash wood
Lowland mixed oak and ash woods include the iconic bluebell woods so central to our notion of British woodland. Mostly quite small and bounded by ancient banks, they are full of history. At their…