The birds will learn to adapt to their new environment, forcing them to learn to habits in order to survive. While the birds in the rainforest may have a variety of food resources, they may be at higher risk of being hunted due to the other animals already in the environment. The birds in the island will have a lower food supply, and will have to learn to live off of less nutrients. These birds may also produce offspring with other birds already living in their new locations. These offspring will have new features that may make it easier to survive in their living conditions. When reintroduced, the birds will be two different species since they may no longer look the same, and will have very different habits and ways of survival.