18:00Yorkshire FarmingSquirrel Control, Bird Flu, Wild BoarBBC Radio York Duration: 17 minutes Sun 12th Feb 2017, 18:00 on BBC Radio YorkAvailable for over a yearListen nowCould contraceptives for grey squirrels help protect North Yorkshire's reds?GenresFactualScience & NatureNature & EnvironmentBrandYorkshire Farming Source: BBC Online