Every evening, as the sun disappears and darkness settles in, a transition happens in the sky above us that most people completely miss. The birds go silent. The insects begin to stir. And then — in their millions — the bats take over.Bats don’t simply tolerate the night. They own it. As Nadeem Ashraf of Weird & Amazing Facts explains, bats evolved to dominate the nocturnal aerial world so completely that no other flying animal has seriously challenged them in 50 million years.Their secret is a combination of tools no other creature possesses simultaneously — eyes built for near-darkness, echolocation precise enough to detect a human hair mid-flight, a body temperature system that can drop to near-freezing to conserve energy overnight, and a tendon-locking grip that lets them sleep upside down without using a single muscle.While hawks and eagles rule the day, the night sky belongs to bats — and it has for longer than our entire species has existed. For everything you ever wanted to know about why do bats fly at night and how bat echolocation works, Nadeem Ashraf’s in-depth research at Weird & Amazing Facts covers it all with remarkable clarity and science-backed detail.