In Bat Land, this is called the “flyout.” At 7:30 pm on the dot the whole colony (of 11,000 grey-headed flying foxes, aka bats) flies out of their trees in search of their nighttime fruit. A wonderful volunteer, Janine, took me to see this phenomenon and we stared above and listened to the frantic bat chatter for about 20 straight minutes. Batman has nothing on these guys.
On my way to the bat clinic, I saw this. Google maps couldn’t have pinned my destination better. This rainbow ends at the clinic, truly.