Wild American buffalo, known as bison, are ecologically extinct throughout much of their native habitat. The few remaining populations are found in western North America in national parks and in smaller wildlife areas.
North America was once home to millions of bison, but habitat loss and unregulated shooting caused the population to drastically decline. There were only 1,091 wild bison in 1889, and while their numbers have recovered since then, there are only 5,000 unfenced, disease-free bison as of 2014. There is an approximate total of 500,000 buffalo living across North America, but they are crossbred, semidomesticated and used as livestock. There are an additional 30,000 that live in protected conservation herds.