So three widely-separated colonies of penguins are genetically identical. But-but-but, evolution says that they should be different! So we have to come up with a mechanism to explain why evolution doesn't seem to have happened in a place where it should. Whew! Crisis averted.
Oh - the article includes this statement:
Microevolution involves small-scale genetic changes in a species over time. The classic example is a color change undergone by British pepper moths in response to changing levels of air pollution.Only problem is, that example is a well-known hoax, not a classic example.