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Grassholm - BirdForum Opus

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Photo by philedward
Grasholm has the world's second biggest colony of Northern Gannets



More remote and much less accessible than Skomer, Grassholm lies off the south-western tip of Pembrokeshire and is famous for its gannetry, one of the largest in the world.


Notable Species

In addition to Northern Gannet there are breeding Common Guillemot and Razorbill, Shag, Kittiwake, Herring Gull and Great Black-backed Gull. Oystercatcher breed on the shingle beaches. Atlantic Puffin formerly bred in large numbers but their burrowing led to collapse of the soil and although they now longer breed, small numbers may still be seen in summer when Manx Shearwater is also present offshore.


Birds you can see here include:

Manx Shearwater, Northern Gannet, European Shag, Eurasian Oystercatcher, Herring Gull, Great Black-backed Gull, Black-legged Kittiwake, Common Guillemot, Razorbill, Atlantic Puffin

Other Wildlife

Grey Seal are common in the seas around the island.

Site Information

History and Use

To do

Areas of Interest

To do

Access and Facilities

Landing on Grassholm is possible only in very calm weather and not permitted until after 15th June. However, there are boat-trips available which sail around the island from April onwards from Martinshaven.

Approved Boat Trips:

Thousand Islands Expeditions run guided trips to Grassholm, from St Justinains (1 mile west of St Davids) and run every day (weather permitting) from 1 June to 30 September. To book please contact:

Thousand Islands Expeditions

Tel: 01437 721721 or 721686 [1]

Contact Details

RSPB Ramsey Island St Davids SA62 6QA Telephone: 07881 846498

External Links

  1. RSPB Grassholm

Content and images originally posted by Steve