The Sound That Haunted Diplomats in Cuba? Crickets

These noises sound strange, unnatural, and even mechanical because most of us have absolutely no idea what the vast majority of animals sound like. Here, for example, are some lynx that (starting about 40 seconds in) wail like drunk banshees.

via https://www.theatlantic.com/science/archive/2019/01/sound-haunted-diplomats-cuba-crickets/579637/