The corn bunting has undergone one of the steepest declines of any UK farmland bird, losing over 90 percent of its population.
Corn buntings have been devastated by intensification of cereal and grass farming. Early silage cuts destroy nests and kill incubating females and chicks. Loss of winter stubble eliminates critical food resources. Herbicides and pesticides have removed the insects and weed seeds on which birds depend. The species is now extinct over large areas of its former range.