Sorry to keep referring to it but even if you trap and snare those that you can legally do so, you still have the same problems. The proliferation of avian predators is the biggest.problem with badgers coming next. The amount of sparrowhawk's, buzzards, kites, ravens, carrion crows and magpies is now way beyond reason.
Our grey partridges are declining rapidly on the estate even after all legal predation control has been carried out and habitat well managed. When I was young I could count Covey after Covey on a mixed farm, they are now extinct along with many song birds in that area. In those days all crows and magpies nests were destroyed and the birds shot by either farmers or keepers,.buzzards and ravens were only seen in Wales and Scotland and sparrowhawk's were not plentiful. The reasons for the demise of partridge is plain to see but their countrywide disappearance will never be altered due mainly to the inability to control their main predators.