They are not successful because they are not used to the environment. There adaptation can not help them. For you saved a snowshoe hare. The snowshoe hare changes color depending on what type of season it is. So you take the when it is winter in Pennsylvania. You take to Colorado and release it. The snowshoe it white all white it takes ten weeks to change color. You just released it into a sunny location where there is no place for it to hide . It will probably get eaten.
