The Peregrine Falco peregrinus in quarries: Current status and factors influencing occupancy in the Republic of Ireland
Moore NP, Kelly PF, Lang FA, Lynch JM , Langton SD
BIRD STUDY 44: 176-181 Part 2 JUL 1997

Abstract:
A survey of quarry-nesting Peregrines conducted in the Republic of Ireland between 1991 and 1993 estimated that 65 quarries were occupied by Peregrines. There was a marked east/west gradient in occupancy with most occupied quarries in the east. Occupation of quarries by Peregrines is primarily influenced by cliff height.