The British Wildlife Trust, formerly known as the Game Conservancy detail how in Sussex England grey partridge are near extinction, save for one farm where they practice simple conservation measures, and their partridge increased by 1600 per cent.

These practices include beetle banks, conservation headlands, cover crops, nesting cover, winter feed. There is one more that is not mentioned but must contribute- the farm makes money from shooting days on these wild birds, money that offsets the production loss from the conservation steps taken. If hunting were to contribute cash directly into farmers' pockets things would most likely change. Sounds cynical, but it probably counts.