March 1979 – vol. 72, issue 3, pp 104–114 During 1973-75, I spent part of three summers guarding the eyrie of a pair of Peregrines Falco peregrinus on the Welsh coast, on behalf of the RSPB. In order to prevent the theft of young birds, I began my duties when they were about three weeks old, and remained until after they had all flown. This involved my presence at the site from about the end of May to the end of June, the precis... This article is only available to registered users.To read more, please log in or purchase a subscription.