Himalayan musk deer (Moschus leucogaster) is listed as endangered by the IUCN, because of over-exploitation. The Himalayan brown bear is critically endangered. They are poached for their fur and claws. The Siberian tiger is classified as endangered by the IUCN. South China tigers (Panthera tigris amoyensis) is also the most critically endangered. The IUCN states that the great Indian bustard has been listed as critically endangered because it has an extremely small population that has been declining rapidly because of habitat loss and degradation, hunting, and direct disturbance. Green peafowls or peacocks are in the endangered bird species list and their population is fast decreasing. Pheasants are one of the most endangered groups of birds in the world. Thus, the correct answer is option D.