Farm Land Birds in the UK Disappear

A report has suggested that EU agricultural policies have been responsible for decimating the bird populations that traditionally live on farm land in the UK (http://www.guardian.co.uk/environment/2012/may/26/eu-farming-policies-bird-population?newsfeed=true). The changes in the numbers of Grey partridge, Linnet, Meadow pipit, Starling, Tree sparrow, Turtle dove etc have been extraordinary (seemingly much worse than those seen at the height of the DDT impact). As similar practises are being adopted by newer EU members, this is likely to exaccerbate the problem. Perhaps agricultural policy needs to focus on factors over and above simple cheap food production?