The problem with evolution is that it promotes a single line of development rather than one for flying things and another for swimming things and another for walking things. There are no cross species examples, the wide variety can be attributed to adaptation to local conditions.DNA history tells a different story. Of course you choose to believe creationism over evolution too so your opinions on anything scientific get discounted immediately.
Quick example, a bird decides to live on the water as food is plentiful so over a million years it adapts to that change and that is how whales came to be. (rather than the current model which means they have to change from warm blooded to cold blooded and the movement of their spine has to change. That is compared to losing their wings (for flippers) and their nose moving higher on their face, both changes come under adaptation and no species jumping involved.