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Hummingbirds burn extreme energy by day, then may enter a cooling mode called torpor at night. Heart rate and temperature drop, and they ramp back up with morning light.
Watching a hummingbird is like watching a tiny rocket. It beats wings dozens of times per second, hovers, and burns fuel fast. If that pace continued all night, the tank would empty quickly.\n\nThat is why some hummingbirds enter an energy-saving state called torpor at night. Body temperature falls, heart rate and metabolism slow, and energy use drops dramatically. It helps them make it through the night safely.\n\nIn detail, warming back up is part of the plan. Sunrise and the first feeding opportunities help ramp the system up again. The daily plunge and rebound is a big strategy in a tiny body.\n\nTorpor shows that performance has a cost in nature. Living fast requires resting smart. The hummingbird turns energy economics into a reliable rhythm.
