正Cranes are a family of ancient species. They have been living on the world for a very long time. Most cranes inhabit wetlands, and until recent times their habitats were vast and remote from humans. Yet with pressur...正Cranes are a family of ancient species. They have been living on the world for a very long time. Most cranes inhabit wetlands, and until recent times their habitats were vast and remote from humans. Yet with pressures from hunting and reclaiming wetlands in the modern period, most crane species throughout the world are now threatened with extinction. China is the country with the richest diversity of crane species. All of China's展开更多
文摘正Cranes are a family of ancient species. They have been living on the world for a very long time. Most cranes inhabit wetlands, and until recent times their habitats were vast and remote from humans. Yet with pressures from hunting and reclaiming wetlands in the modern period, most crane species throughout the world are now threatened with extinction. China is the country with the richest diversity of crane species. All of China's