What Makes Some Animals Resilient to City Life?

An animal's ability to change its behaviour in response to a changing environment can make all the difference, Sih has found in his research. In some animals, this ability to alter their behaviour is the first step to more profound change. "Step one is that they need to respond well behaviorally," Sih says. "If they do that well enough, they survive well enough to have a chance to later evolve…