When a rancher calls because coyotes are killing livestock, the job is different from recreational calling. The goal is to identify and remove the specific animal(s) responsible — not just kill the nearest coyote. A coyote that finds a dead calf and feeds on it is a scavenger; a coyote that killed it is a killer. Killing the scavenger and leaving the killer solves nothing and costs you the landowner's trust. Les Johnson's approach: start near the kill or the cattle, work outward, look for old or mangy animals as primary suspects, confirm with stomach contents, and follow up with the rancher 2-3 weeks later to verify the problem stopped.
Hunter does not begin at an arbitrary stand — begins at the kill site or the cattle concentration. Coyotes that are actively killing livestock patrol a tight circuit around their target and will come to calls near their kill. Hunter sets up between rough country (coyote bedding terrain) and the cattle, with wind from the cattle direction — so any approaching coyote comes upwind of the cattle and into the hunter's kill zone. When multiple coyotes are likely involved (a pair hunting together or a pack exploiting calving), hunter plans for multiple animals and continues hunting the area after the first kill. Killer coyotes tend to be identifiable: old animals (worn teeth, grey muzzle), mangy animals, or animals that approach without caution because they associate the cattle area with reliable food. Stomach contents of the killed coyote confirm guilt — fresh calf tissue in the stomach is definitive. Hunter contacts the rancher 2-3 weeks post-removal to verify losses stopped. If they didn't, a scavenger was killed and the actual killer is still operating.
At a livestock depredation site, the coyote that killed the livestock and the coyotes feeding on the carcass are behaviorally distinct at 200 yards. The killer is old (grey muzzle, worn teeth), deliberate, and approaches without the wariness of younger animals. Scavengers are younger, skittish, and approach from random directions.