So the reason we live beneath the lighthouse is to monitor attracted birds. A lot of different species of bird move long distances at night, using the stars to help them navigate. If the weather turns bad during these movements then the birds can orientate themselves towards the big flashing light coming from Bardsey. When this happens it is possible that thousands of birds may arrive in the area around our house.
Giselle with a Leach's Petrel which was attracted to the lighthouse last September (c) Richard Brown