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English: Original distribution of plains bison (Bison bison bison) and wood bison (Bison bison athabascae) in North America, based on available zooarchaeological, paleontological, oral and written historical accounts. Holocene bison (Bison occidentalis) is an earlier form at the origin of B. b. bison and B. b. athabascae.
Plains bison are often in the smaller range of sizes, and wood bison in the larger range. Head-rump lengths at maximum up to 3.5 m (11 ft 6 in) for males and 2.85 m (9 ft 4 in) for females long and the tail adding 30 to 95 cm (1 ft 0 in to 3 ft 1 in).
North America map with states and provinces.svg The ecological buffalo : on the trail of a keystone species. Wes Olson 1954- and Johane Janelle 1959-, Regina, Saskatchewan : University of Regina Press. 2022. page 54.
The CSKT Bison Range (BR) is a nature reserve on the Flathead Indian Reservation in western Montana established for the conservation of American bison. Formerly called the National Bison Range, the size of the bison herd at the BR is 350 adult bison and welcomes 50–60 calves per year.
Bison herd grazing at the CSKT Bison Range. The environment of the great bison belt has been defined by low rainfall, typically less than 24 in (610 mm) per year. In drier areas, annual rainfall was less than 16 in (410 mm). [4] The area has also been unstable and unpredictable. Periods of drought could quickly be replaced by excessive rainfall ...
Original file (SVG file, nominally 400 × 266 pixels, file size: 1.51 MB) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
The wood bison is potentially more primitive in phenotype than the plains bison (Bison bison bison), while the latter probably evolved from a mixing of Bison occidentalis and Bison antiquus. [15] It is unclear whether today's animals preserve the original phenotypes existing prior to the 1920s. [ 15 ]
The European bison (pl.: bison) (Bison bonasus) or the European wood bison, also known as the wisent [a] (/ ˈ v iː z ə n t / or / ˈ w iː z ə n t /), the zubr [b] (/ ˈ z uː b ə r /), or sometimes colloquially as the European buffalo, [c] is a European species of bison. It is one of two extant species of bison, alongside the American bison.