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Since hummingbirds are accustomed to eating nectar from the stamens and small insects hiding in the center of the flowers, which are generally too small and very delicate, if the hummingbird rests on the flower, the flower will not be able to support its weight, so the hummingbird has to develop its strange wings. Its long, narrow wings vibrate rapidly 50-70 times per second, allowing only a faint gray fog to be seen. Its flight speed per second is available.
Reaching meters, it can fly not only forward, but also backwards, and like a propeller.
The leaves do so in a circular circle. It sometimes resembles a miniature helicopter.
It can rise and fall vertically, like an upside-down acrobat, hanging vertically in the air, and stretching its beak into the flower to fetch nectar and insects.
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Hovering in the air by flapping its wings quickly, about 15 to 80 times per second, its speed depends on the size of the hummingbird. Hummingbirds get their name from the humming sound of flapping their wings. Hummingbirds are the only birds that can fly backwards.
Hummingbirds can also hover in the air as well as fly left and right.
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Hummingbird (wood nymph) is a collective name for about 600 species of hummingbirds in the order Swifts, and is the smallest known bird in the world. The hummingbird is small and able to hover in the air by flapping its wings quickly, about 15 to 80 times per second, depending on the size of the hummingbird. Hummingbirds get their name from the humming sound of flapping their wings.
Hummingbirds are the only birds that can fly backwards. Hummingbirds can also hover in the air as well as fly left and right.
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Provides hovering power by flapping its wings quickly, allowing it to float in the air, with the number of flapping of its wings ranging from about 15 to 80 times per second, depending on the species and size of the hummingbird.
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You're saying they're busy, right?
Like other birds, hummingbirds need to flap their wings to fly, but their tiny wings make them work much harder than other birds. To adapt to the rapid flapping of the wings, the hummingbird's metabolism is the fastest of all animals.
Their heartbeats can reach 500 beats per minute! Hummingbirds consume far more food than they would have weighed on each day, and in order to obtain huge amounts of food, they must eat hundreds of flowers every day. Sometimes hummingbirds have to endure hunger for hours.
To adapt to this, they can slow down their metabolism at night or when food is not readily available. Entering a state like hibernation, called "hibernation", during which the rate of heartbeat and the rate of breathing are slowed down to reduce the demand for food.
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I've never heard of hummingbirds flying all the time.
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You see it, so it flies.
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If there is no such thing, what about not resting?
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It's not that it's flying all day, it's just that when you see it, it's flying!!
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If you don't let it fly, then what do you let it do.
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If you don't fly, you'll be blown away by the wind!
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- -Who said you fly all day...
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If the position of the hummingbird relative to the flower branch does not change, then the hummingbird is stationary;
The air force and gravity on the hummingbird are a pair of balanced forces, and the direction of gravity is vertical and downward, so the direction of the air force on the hummingbird is vertical and upward, and the magnitude is g
So the answer is: flower branches; Vertically upward; g.
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Ban superstition, don't care, keep the excellent culture, abolish the bad things, in short, what hurts people is superstition, and what doesn't harm people is called traditional culture.