Some animals sing (birds, whales) and plenty of animals make sounds together at roughly the same time (wolves howling, prairie dogs yelling at threats). Are there animals that harmonize? Or animals that make sound that’s rhythmically coordinated, like has a time signature?
Guess I’m asking about more finely coordinated sounds. It’s something that’s pretty neat about human music.
If it’s rained in the late afternoon then stops by nighttime, the frogs in the marshland across the street seem to synchronize their songs and get very very loud.
I’ve heard katydids do the same thing at night after very hot days.