Micro-evolution is a fact that is plainly observable throughout nature and nothing in the Bible would contradict micro-evolution. The issue of concern for many Christians, however, are the verses in Genesis 1 and 2 which seem to indicate God's direct intervention to form new species, including humanity. For this reason, I would argue that macro-evolution does not appear to be compatible with Scripture.
The classic example of micro-evolution are the finches (small birds) Darwin studies on the Galapagos islands off the coast of South America. Christians make the point that although Darwin observed many different kinds of finches with different sorts of beak sizes and shapes, they were all still finches. They hadn't "evolved" into something else.
Anyways, there is another good example of this issue in the news this week.
Evolution Occurs in the Blink of an Eye
By Jeanna Bryner, LiveScience Staff Writer
posted: 12 July 2007 02:05 pm ET
A population of butterflies has evolved in a flash on a South Pacific island to fend off a deadly parasite.
The proportion of male Blue Moon butterflies dropped to a precarious 1 percent as the parasite targeted males. Then, within the span of a mere 10 generations, the males evolved an immunity that allowed their population share to soar to nearly 40 percent—all in less than a year.
“We usually think of natural selection as acting slowly, over hundreds or thousands of years," said study team member Gregory Hurst, an evolutionary geneticist at the University College London. "But the example in this study happened in a blink of the eye, in terms of evolutionary time."
The real controversy between creationists (I prefer to call them "interventionists") and evolutionists is whether examples of micro-evolution that have been observed in nature are adequate enough to extrapolate into providing incontroverable support for macro-evolution. Evolutionists don't tend to make a distinction between the two, while creationists (or interventionists) would classify this butterfly adaptation as micro-evolution, but would say that this does little to prove the veracity of macro-evolution.
That being said, I'm not one of those Christians who gets into name-calling about evolution. I disagree with it. I think that the secular version of evolution has some rather troubling worldview implications which directly contradict the Christian worldview. But I think it does not show the world that Christians are loving when we engage in discussions about evolution that cast dispersions on people who hold to that point of view. Very, very few evolutionists are ardent atheists who hold the view for philosophical reasons.