Figure 23.5 The global status of conifers, birds, mammals, amphibians, and fish. Species threatened by the risk of future extinction include 30 percent of conifers, 13 percent of birds, 25 percent of mammals, 41 percent of amphibians, and 44 percent of fish.

Data from International Union for Conservation of Nature, 2012 http://www.iucnredlist.org/about/summary-statistics#Tables_3_4.