We lack a mechanistic understanding of how sparse populations of this small predator could be having a substantial impact on prey. (nature.com)
In areas with sparse populations, such as along the remote coast of Chile, records are particularly spotty and could be inaccurate. (sciencemag.org)
On the other side, companies like Amazon and Google are urging lawmakers to allow for testing of delivery drones in areas with relatively sparse populations. (inc.com)