With advice from noted ornithologist Dr. Julian Greenwood, staff at Bangor Marina have modified the guillemot nesting holes on the Eisenhower Pier. Recycled marina decking planks are now being used to decrease the size of the nest hole entrances.
Over the last few years we have witnessed a decline in the number of chicks hatching and surviving to fledgling age. Unfortunately the main cause of this decline has been the predation of eggs and young by Great Black-backed Gulls and Crows. With the decrease in size of the nesting entrances, it is hoped that predatory birds will no longer be able to gain access to eggs and newly hatched chicks.