This is a bird not only very small in size, about 2 grams in mass, but it is also very particular. Lives in Cubain nests that do not exceed 3 centimeters in diameter, can fly at 50 km per hour and is the only bird that can fly backwards.
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He zunzuncito it’s a hummingbird very small that beats its wings at a very fast frequency, which can range from 12 to 90 beats per second. But It is so small that it looks more like an insect than a bird.
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The zunzuncito or fly bird is the smallest hummingbird in the world: it weighs only two grams.
By moving their wings so quickly, the metabolism of these birds is the highest among homeothermic animals and one of the highest in the entire animal world. Their heart rate is also high: there have been reports of this type of birds with heart rates of up to 1,260 beats per minute.
At night, when they don’t fly and they don’t feed, they enter a kind of lethargy. Your body temperature, heart rate and kidney activity are reduced, significantly reducing your metabolic expenditure.
The zunzucitos either fly birds Eat a lot. In fact, They are the animals that eat the most in relation to their size. This is because they require a lot of energy given their metabolic needs and they also need large amounts of oxygen.
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The zunzuncito hummingbird is the animal that eats the most of all, at least taking into account its size.
This kind of hummingbirdthe smallest of the hummingbirds, feeds on nectar, which contains carbohydrates. But the quantities contained in the flowers are very small and therefore They fly from flower to flower about five hours a day feeding on 15,000 different flowers.
On each day, the hummingbirds Fly obtain an amount of nectar equivalent to their total body mass, but since it is such a dilute food, they must ingest a mass of nectar that represents between 5 and 15 times more than their own weight.
But hummingbird smallest that exists not only feeds on nectar. On some occasions also eats an insect to satisfy its needs for salts and proteins. For such a small bird, procuring so much food seems like an exhausting task, but the zunzuncito He does it day by day.