What name was given to large herds of wild cattle that grazed in the American plains?

The term used to describe large herds of wild cattle that grazed in the American plains is "buffalo herds".

While "wild cattle" is accurate, the specific term "buffalo" is more commonly used to refer to these herds. It's important to note that the American Bison is often referred to as "buffalo," but it is not actually a true buffalo.