to hunting, habitat destruction and climate change. But what happens when endangered animals are brought back from the brink?
By the mid-20th century, fewer than a thousand gray wolves were left in the contiguous United States, down from at least a quarter million before colonization. The recovered vegetation helped stop soil erosion into rivers, changing their course by reducing meandering. It's thought there are now more than 6,000 gray wolves in the contiguous United States. The main threat is legalized hunting in some states.The story of the American buffalo - also known as bison - is inextricably linked to the dark history of the early United States.
Buffalo, he explained, are an integral part of TNC's efforts to re-establish prairies in the Nachusa Grasslands of Illinois.