TIL that the Farallon Islands, off the coast of San Francisco, California, has the highest rodent density of any island in the world, with over a thousand mice per acre. Visitors to the islands can, at times, see the ground moving when the mice are burrowing their underground tunnels.
TIL that the Farallon Islands, off the coast of San Francisco, California, has the highest rodent density of any island in the world, with over a thousand mice per acre. Visitors to the islands can, at times, see the ground moving when the mice are burrowing their underground tunnels.