Darwin’s finches, which are a classic example of evolution, are dying off due to an infectious parasite that damages their beaks. The damage causes their mating calls to have an unpleasant tune, hindering their ability to reproduce. – WTF Fun Facts
WTF Fun Fact – Darwin Finches Failing To Evolve

My backyard is full of yellow Darwin finches…. I’ve been in my home for about three years now, and all they do is multiply.
A classic example of evolution? What? Every living this is the result of evolution.