Flash Forest, a Canadian start-up, plans to plant 40,000 trees in the north of Toronto within a few days. It uses drones, i.e. technology that also plays a role in detecting and fighting forest fires. By 2028, it aims to have planted a full 1 billion trees. “The company, like a handful of other startups that are also using tree-planting drones, believes that technology can help the world reach ambitious goals to restore forests to stem biodiversity loss and fight climate change. The Intergovernmental Panel on Climate Change says that it’s necessary to plant 1 billion hectares of trees – a forest roughly the size of the entire United States – to limit global warming to 1.5 degrees Celsius.” (Fast Company, 15 May 2020) It is without doubt a good idea to use drones for planting. But you have to remember that unmanned aerial vehicles (UAV) of this type have a bad energy balance. Above all, however, birds and other creatures must not be frightened away and must not be hurt (see, e.g., this article). In this context, insights from animal-machine interaction and machine ethics can be used.