Dense bison herds may threaten nesting bird species

Overhunting depleted the population of American bison from tens of millions to fewer than 1,000 in the span of just the 19th century. With conservationists and ranchers recently reintroducing the species to U.S. grasslands, ...

Time ticks away at wild bison genetic diversity

Evidence is mounting that wild North American bison are gradually shedding their genetic diversity across many of the isolated herds overseen by the U.S. government, weakening future resilience against disease and climate ...

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