German ornithologists say wild birds have learned to imitate mobile phone ringtones as they adapt to their environment, which over the last several years has featured a growing number of phones. Jackjaws, starlings and jays are reported to be the best mimics, and good enough to fool even “practiced birdwatchers”.
But, birds aren’t as full featured as modern handsets: apparently birds can’t imitate the “complex melodies” of today’s pop music, just the monophonic ringtones of old. That’s probably a good thing, as hearing a jay chirp the Crazy Frog song would pretty much creep me out.