In a study on hunting in a low-density greater sage-grouse population in Nevada, low populations may be a result of factors other than hunting. Protecting one greater sage-grouse population from hunting while doubling the birds harvested in a four-year period on another population showed, despite low recruitment, both populations increased to nearly the same density. In an Oregon study, no relationship was found between the rate of summer recruitment (chicks/adult) and harvest by hunters, nor was any significant relationship found between the size of the fall harvest and population trends during the subsequent spring.