Diversification of early bird ancestors

Many species of birds are very important to humans from an economic point of view. Poultry and wild birds are the main sources of meat, eggs, and feathers. Some of them, like taking care of birds and parrots, are also gentle pets. Its droppings (droppings) also provide fertilizer for plantings and still attract hobbyists to watch over them, making it one of the reasons for the resurgence of ecotourism in many areas. Birds have played an important role in various human civilizations and cultures, but harmful human practices have caused them serious damage, and between 120 and 130 species of them have become extinct since the 17th century, of which 1,200 are currently endangered. extinction criticism. Many international and local organizations and bodies are constantly working to preserve birds and their natural habitats and remove them from the ground.