I had an uncle who bought a sheep ranch in Wyoming in the 1920s. His son told me that when they first settled there, his father had a shotgun, and the coyotes would stay just out of range, sit and laugh at him. Then his dad bought a high-powered rifle and shot one while the rest scattered. The funny thing my cousin said was by the next day every coyote in the county knew his father had a rifle.
Coyotes in the Hi-Desert tend to pack in the night time.
Packs of 50-100 weren’t uncommon.
Individually or in small pairs during the daytime they appear innocuous. In the evening, as they begin circling their prey, the pack picks up and gets dangerous.