Comment by krustyburger

5 days ago

Surely you don’t think birds have evolved to sing more complex songs in the time since mass EV adoption?

Birds adapt their song to ambient noise conditions. This paper [1] studies the Pearl River Delta (where Shenzhen is) as a natural experiment. It shows spectral changes in the target species correlating to background noise levels. I haven't looked hard enough to make sure there isn't a study that does find complexity changes but it's certainly clear that noise can affect bird song behavior generally.

[1] https://www.sciencedirect.com/science/article/pii/S235198942...