Like many wild birds, the kestrel suffered as a result of the use of organochloride pesticides. The population declined rapidly during the 1970s, possibly as a result of agricultural intensification, habitat loss and a decline in populations of small mammal prey (5). Although the population seems to have remained stable during the last 15 years or so, there is some evidence that a further decline has occurred since 1994 (5).
The kestrel should benefit from agri-environment measures aimed at improving farmland habitats for wildlife. Prescriptions such as unsprayed field margins and leaving stubble fields unploughed during the winter should increase the populations of small mammals and birds on which kestrels feed. Set-aside fields also provide good habitats for mice and voles (8).