Birds are higher vertebrates adapted to life on land and in the air. Birds in my country are divided into six categories: migratory birds, wading birds, climbing birds, land birds, raptors and songbirds. These six categories are collectively referred to as the six ecological groups of birds. There are many types of birds, spread all over the world, and with diverse ecologies. There are more than 9,020 known species of existing birds, and there are more than 1,400 species in my country.