When most wild animals first encounter humans.

• Position: NOTEWORTHY

When most wild animals first encounter humans, they respond as they would to any predator--by running, swimming, or flying away. Over time, though, some species become more tolerant of humans' presence; the extent to which they do largely is driven by the type of environment in which the animals live and by their body size, according to Daniel Blumstein, professor and chair of ecology and evolutionary biology at UCLA, who analyzed...