Wednesday, September 21, 2011
"God sees the little sparrow fall..." does He see them appear, too? Researchers in Norway are arguing a recent but distinct species, the Italian sparrow, has emerged from the mingling of the common house sparrow and the Spanish sparrow. The Italian sparrow shares habitat with the Spanish but doesn't breed with it and has enough differences in its DNA to differentiate it from either parent species. As this article points out, what constitutes a species remains fuzzy.