First, prove the horse is actually gone
The protocol starts with a disciplined ten minutes, because the commonest 'missing horse' is one on the premises but not where anyone expected: cast in a stable corner, down in a ditch, asleep behind a shelter, or let into the wrong field the evening before. Check the horse's own box and field corner by corner, then every other field, shelter and barn on the yard, calling its name and listening — an injured or cast horse often answers or shifts. Only when the yard itself has been properly swept does 'missing' become the working assumption, and that confirmation matters because everything after it, especially police involvement, should be spent on a real escape rather than a horse standing in the wrong paddock.
Read the perimeter like a story
Next, one experienced person walks the boundary of the field or yard the horse was last in, slowly, looking for how it got out: rails pushed or broken, wire strained, a gate unlatched or its chain undone, a ditch crossing scuffed up, hair on a fence post. Whether the fence is broken outward or the gate simply stands open changes the interpretation completely — a horse that has pushed through is probably nearby and possibly injured, while an unlatched gate raises the question of whether anyone else has been on the yard. Note tracks and droppings on the far side: fresh dung and a line of prints heading down the lane are worth more than an hour of guessing, because they give the search a direction. Photograph damage before anything is repaired, both for insurance and in case the escape turns out not to be accidental.
Search the loops a horse actually travels
Horses at liberty rarely strike out randomly. They graze their way along verges, they follow fence lines, they head for other horses, and they very often loop back toward familiar ground — a previous yard, the field they were in last month, or the gate where they are usually fed. So the first search covers those loops on foot and by slow car: neighbouring fields with horses, the lanes both ways, bridleways and any open gateway into grazing. Searchers should carry a headcollar, lead rope and a bucket with feed to rattle, keep voices easy, and approach any found horse at the shoulder, not head-on. Anyone who spots the horse but cannot catch it safely should simply stay with it at a distance and phone in the location rather than pushing it onward.
Calls and alerts, in order
While the search runs, one named person works the phones so nothing depends on memory: yard manager and owner first, then the police if the horse may have reached a road — a loose horse is a genuine emergency for drivers and officers would far rather hear early. Neighbouring yards, local riding groups and the nearest livery yards come next, since a found horse is usually phoned in to the closest yard anyone knows. Then widen it formally: the horse's alert on KinsLe's Lost Pet Alert System is free in its profile and shows on the map, so anyone who spots the horse can reach the yard with a direct message through KinsLe instead of chasing a phone number — the step a paper-only protocol loses hours on.
Write it down while it is happening
The last part of the protocol is unglamorous and saves the most grief: a single log, kept by the person on the phones, noting the time the horse was found missing, who searched where and when, every call made and every sighting reported, including the false ones. If the horse is found hurt, that log supports the insurance claim and the vet's picture of timings; if the escape turns out to involve a third party, it is the yard's contemporaneous record. When it is over, the protocol closes with a review — how the horse got out, what gets fixed that day, and whether the kit, the contact list and the KinsLe Lost Pet Alert System step are all sitting ready for the next morning they are needed.