With red-white-black colours, our UFO camera systems usually stand out well when working on construction sites, solar fields or wind farms. However, it is different at night. Thanks to the infrared light used, the cameras detect everything that moves without spreading artificial light. And that is good for humans and animals according to Dr Kamiel Spoelstra of the Netherlands Institute of Ecology (NIOO-KNAW). "With infrared light, you are then very well positioned. You can't get any better."