American Bison

American Bison — page 3
plants The sun beats down on their shaggy brown capes of fur When the herd has taken its fill it is time to rest Most of the bison lie in the grass They make deep sighs as they fold their legs beneath their large bodies But two bulls A Big Influence Bison had a large effect on their habitat They were the largest herbivore on the plains When they were removed from the plains many other plants and animals also disappeared Now groups are working to save the plains The bison are an important part of this work Bison droppings contain plant seeds Their hooves mix the soil and bury these seeds In 2005 bison were brought back to Grasslands National Park It is on the Montana and Saskatchewan border Bison have changed the habitat in a good way Many different native plants are once again growing in areas where there were few before are restless They lower their heads and snort Their fury grows Who is strongest They paw the ground and charge Their large horns hook as they battle head to head Threats to Bison Once grasslands covered one third of North