Descriptions of sage-grouse populations, Western Association of Fish and Wildlife Agencies Management Zones (MZ), years hunted, and lek sample sizes used in N-mixture models.

Regulation histories were stratified by sage-grouse populations with the same years when human harvest of sage-grouse occurred (n = 8 regulation histories). The ‘Never’ regulation history was subdivided into SG populations with adequate data for 1995–2013 and 1996–2013. Male count data were collected by states/provinces throughout the western U.S. and southern Alberta and Saskatchewan Canada from 1995–2013.