Nature's First Alarm Clock 🐓⏰ #facts #shorts

追加: 2026-05-26

[00:00:00][screaming] Every morning, [music] same time, no phone, no alarm, no sun. This bird [music] has been keeping perfect time for millions of years. Scientists locked roosters in a completely dark room. They still croed at the exact same time every morning. Because the rooster doesn't follow the sun, it carries a biological clock deep inside its brain. [music] The sun doesn't wake the rooster. Nature built the first alarm clock millions [music] of years before humans needed one.