"That's a form of evolution known as character displacement, where natural selection produces an evolutionary change in the next generation"
So thats what happened to democRATS......
I don't believe it.
This is an example of adaptive variation, utilizing information already available within the birds' gene pool. To call this evolution, in the sense of generating a new species, is idiocy. The Galapagos finches have been demonstrating such responses to alterations in their environment for as long as man has been observing them and recording such variations in beak size and shape. But they remain finches.