An extract from Morris, L., 1748. Plans of Harbours, Bars, Bays and Roads in St. George's Channel. The extract (page 43) describes occurance of puffins at Skerry Lighthouse, and at South Stack, Holyhead.

The extract reads as follows: ”IN this Island, and also at the South-Stack near Holy-head, Puffins breed in Plenty, which come in a surprising Manner all in a Flock in the Compass of one Night; and after the same Manner, when their Season comes, depart till next Year.”