Kestrels have declined dramatically on UK farmland due to loss of rough grassland foraging habitat, reduced prey availability and changes in agricultural management that have eliminated hunting opportunities.
Kestrel welfare on farmland is primarily compromised by prey scarcity caused by agricultural intensification. Kestrels hunting over improved grassland or arable fields with no rough margins must work much harder per prey item, depleting energy reserves. Nest failure due to prey shortage is a welfare problem as well as a conservation concern.