• The listing would threaten agriculture, ranching, and, most significantly, oil and gas development across the region.

• Minimal disturbance recreational activities (hiking, fishing, camping, picnicking, bird-watching, hunting) and everyday farming and ranching activities that cause no new alteration of habitat can be safely carried out in the secondary zone at any time.

• However, as trapping, mining, ranching, and farming pushed westward, the grizzly was extirpated from much of the Great Plains.