Birds are a class of vertebrates that have a constant body temperature and live on land and in the air. They have characteristics such as feathers, wings and beaks. There are currently many known bird species. According to the records of the International Ornithological Commission (IOC), as of the end of 2021, there are about 11,198 bird species that have been described and named worldwide, belonging to 231 families and 2,288 genera.
The following are some of the more common birds:
1. Pigeon
2. Sparrow
3. Swallow
4. Black Tern
5. Magpie
6. Mallard
7. Whooper Swan
8. Woodpecker
9. Goshawk
10. Peacock
These birds are distributed in different regions and ecological environments, and have their own unique appearance, habits and habitats. In addition, there are many other types of birds, such as geese, storks, ostriches, owls, etc., which are an indispensable part of the natural ecosystem.
