On an adventure to a faraway place, you discover two previously unknown species of woozle. You notice that purple woozles live on the ground and orange woozles live high up in the trees. You gather up all of the purple woozles (they're easier to catch) and take them to a zoo. The next year, when you return to gather up the orange woozles, you find that they now live on the ground as well as in the trees. Based on what you know about niches and competition, what might this indicate?