Conservationists on the islands, which sit in the far north of Scotland, have already used an array of 9,000 lethal traps and eight specially trained tracking and detection dogs to dispatch nearly 8,000 stoats over the past six years. At least 30 of those digital cameras will soon be staked out across the moors and coasts of Orkney’s mainland, building a network that connects hits from the cameras to computers and mobile apps used by the trapping teams.