Another observation of incipient speciation in the wild Answered
A report in Science News this week reports on observations of German blackcaps, which are apparently splitting into two separate, non-reproducing populations, and which are developing distinct appearances along the to becoming separate species.
Since the 1960s, the two populations have developed different wintering migration habits: the original blackcaps migrated from Germany to Spain and back again, while the new population overwinters in England(!), relying on the vast number of backyard feeders (yes, this is all your fault, Kiteman!). Yet another beautiful example of careful observation in the wild of natural selection and its consequences.