Bird watching also promotes habitat conservation. While it was started by conservationists over a century ago, the community continues to be full of individuals who are passionate about protecting animals and the planet. Bill Thompson notes that “the study of birds invariably touches on a number of other subjects”, including biology, history, geography, sociology, and politics. “Developing an interest in birds quickly reveals just how intimately connected we are with earth’s other inhabitants," Bill writes. "All living creatures are interdependent, but humans need birds in the world much more than they need us. Bird watchers, then, have the power to preserve and improve the planet for generations yet to come.”