“This is a nice example of the speed of evolution. It is something we can see with our own eyes if we only look closely enough. It doesn’t have to take a million years.”
So says Martin Schaefer of the University of Freiburg of his study of the split induced into what was formerly a single breeding population of blackcaps in Central Europe by humans feeding the birds during winter. “Our results show that the initial steps of speciation can occur very quickly in a highly mobile, migratory bird.”
Read more about the study in Science Daily‘s By Feeding the Birds, You Could Change Their Evolutionary Fate.