An interesting study out of the National Evolutionary Synthesis Center in Durham, NC that birds such as vireos will modifying the pitch or length of their songs in response to growing noise pollution. Coincidentally, I also change my song in response to excessive noise: “Hey @$$face… I’m talking to you!” Same thing, right?
On one hand, this is a great example of just how amazingly adaptable nature can be. On the other, it’s proof positive of yet another environmental impact we are are having.