Both groups are working with the same facts. Both groups interpret the facts differently. The difference is that evolutionists assume that the changes eventually increase the information content and that a single living cell was the ancestor of all other life. Creationists believe that Creator God created separate kinds. It is reasonable to conclude that birds did not evolve from non-birds.
Whales are mammals designed for life in water.
The NAS asserts that whales evolved from land animals. On close analysis, however, these assertions do not stand up. Humans are very different from apes, especially in intelligence and language. The NAS gives a series of alleged ape-man skulls. The evidence, however, shows that humans and australopithecines are distinct kinds .