"Wherefore art thou, Romeo?" We daytime-active humans mostly just see koalas asleep—and they do that a lot. But it's not all they do. They are actually fairly nocturnal in their habits, and to find out just what they got up to at night, researchers from the San Diego Zoo Institute for Conservation Research teamed up with researchers in Australia to put GPS radio collars on some koalas living on St. Bees Island, off the eastern coast of Australia, and track their movements. Researchers expected to see activity—but what they found out surprised even them. The koalas wandered much farther than expected, especially the males, no doubt looking for females to mate with. The koalas also made use of a greater number and variety of trees than expected—an important consideration for conservation, showing that diverse and plentiful forests are a necessity for healthy koala populations.