One kind turning into another kind is another matter.
Ring species are examples of speciation in progress, where one species may turn into two. Evolution, in other words.
This is a fundamental misunderstanding of evolution. Evolution does NOT say, "one kind turns into another kind." It says that there is a common ancestor, from which many kinds may develop. Ring species allow us to observe this process. Gone for the rest of the day, so this may be my last post on this thread.