Hummingbirds are the littlest birds in the world. But such a solution is not rigorous. Hummingbirds belong to the family of Hummingbirds under the order Swift. There are currently 355 known species of hummingbirds, 8 of which are critically endangered, 15 are endangered, 9 are vulnerable, and about 323 are relatively common.

Only America currently has hummingbirds. America's Guide to America. North America, and surrounding islands, including Alaska. Yes, Alaska, and therefore the cold places have this tropical bird-like creature.

The littlest bee-sucking bird, weighing just one .8 grams, is the smallest bird in the world, distributed in Cuba and therefore the Isle of Youth. there's also a typical North American hummingbird, the red-throated northern hummingbird (Archilochus colubris), which weighs about 3 grams and is 7.6 cm long. the most important of the hummingbirds is the giant hummingbird (Patagona gigas), which also weighs only 20 grams.

Hummingbirds have superb flying skills and also are known as "magic birds", "comets", "forest goddesses" and "flower crowns". Hummingbird feathers are generally blue or green, with lighter underparts, and a few males have crests or slender tail feathers. Among the males, the overwhelming majority are blue-green, and a few are purple, red or yellow. the feminine plumage is darker.

The foremost common hummingbird in North America is the Ann's hummingbird, otherwise referred to as the "face-changing bird." Like most birds, males are more brightly colored than females to court the enormous hummingbird, the most important of the hummingbirds is twice the dimensions of Ann's hummingbird.

It's about 20 centimeters long and weighs up to 23.5g, which is about a load of half an egg. By the way, a standard sparrow is about 15 cm long and weighs 25 to 30 g.

Green hummingbirds, mainly distributed in South America, are male and female (that is, the male and female can be distinguished at a glance). They look a bit like stuffed animals.

Green hummingbirds, mainly distributed in South America, are male and feminine (that is, the male and feminine can be distinguished at a glance). they appear a bit like stuffed animals. Bee-sucking birds are mainly distributed within the islands of Cuba in Central America. they're endemic to Cuba. They mainly inhabit the forest margins with dense bushes and epiphytes. From the name, it are often seen that they mainly feed on nectar, and a skinny beak is a tool for eating honey. additionally to their daily intake of honey, they also occasionally hunt insects and spiders.

Although hummingbirds are small in size, their flying skills are very superb. Unlike many other birds which will only fly forward, hummingbirds can fly left or right, fly backward, and hover within the air. However, when hovering, so as to prevent them from falling, they have to flap their wings quickly. this type of activity is frequent and consumes a lot of energy, so hummingbirds need to eat a lot every day to obtain energy, and therefore the food they eat can reach half of their body weight. thanks to the development of cultivated land and pastures and cutting down a large amount of natural vegetation, the world of ​​the country that retains its natural state is becoming less and less, and therefore the habitat for hummingbirds has become more and more narrow.

As a result, their population numbers are declining, and their living conditions are worrying. within the 19th century, European and American women often used hummingbird feathers as hat ornaments, and merchants bought hummingbird carcasses, which posed an excellent threat to the survival of hummingbirds.

With the event of technology and the improvement of people's awareness of environmental protection, nobody pursues this bloody fashion anymore. Protecting the environment, maintaining ecology, and cherishing and protecting this cute little animal became the consensus of people.