A bat: In the city, they fly along routes that mirror roads | Helen Sullivan

In the city, they fly along routes that mirror roads

Every evening in Sydney, clouds of bats move across the sky. They time their trip so that there is just too little light to make out anything more than a silhouette - which is just enough light so that you can see, very clearly, the outlines of their legs and feet knocking together - an entrechat - as they flap their wings.

I'm not sure that I will ever stop having the exact same thought about this: Oh my God, you can see their feet knocking together. Oh my God."