The first weeks are the danger window
A newborn lamb or kid is small, slow, unsteady and smells of birth — exactly what a fox, a badger, a crow or a roaming dog is looking for in spring. Losses cluster in the first fortnight, and within that, in the hours between dusk and dawn when the field is unwatched. Mothers matter too: a ewe or doe with strong instincts will stamp, bunch her young behind her and face down a fox, while a first-time mother may wander off to graze and leave a sleeping lamb alone in the grass. Your protection plan layers several defences, because no single one holds every night.
Bring them in at night
The single most effective step is the oldest one: mothers and young sleep in a secure pen, shed or barn for the first weeks. Walls, a roof and a shut gate defeat foxes entirely and dogs almost entirely, and deep dry bedding keeps small bodies warm enough to feed strongly. Pen in family groups so mothers keep their own young — mismothering in a crowded pen starves as surely as a fox does. Turn out after the morning check once the sun is up and you are about the place, and bring them in before dusk without exception, including the evening you are late back and tired.
Fencing the nursery paddock properly
By day, the youngest belong in a small paddock close to the buildings where your comings and goings disturb predators. The fence has to work in both directions: mesh low and tight enough that a lamb cannot wriggle through to the dangerous side, and dug in or aproned at the base so a fox cannot scrape under it in a night. Electric offset wires deter digging and climbing, but only while the fence is live and the battery charged — test it as part of the round, not after a loss. Keep grass in the paddock short; long cover hides both lambs from you and predators from them.
Hygiene is predator control too
Afterbirth, stillborn young and any carcass left in the field advertise your lambing ground to every scavenger in the parish. Clear them promptly and dispose of them properly, and feed any supplementary rations in the pen rather than scattering feed in the field, which trains crows and foxes to visit daily. A livestock guardian — a llama, an alpaca or a guardian dog bonded to the flock — adds a watching, territorial presence that genuinely deters foxes, but a guardian is a long-term commitment with its own needs, not a kit purchase the week before lambing.
Roster the routine so it never slips
Predator protection fails on the one dusk nobody penned up, the one dawn nobody walked the fence — and lambing season makes everyone tired enough to be that nobody once. Put the evening penning, the fence test and the first-light count onto a shared roster in KinsLe's Care Teams, assigned to whoever is on duty that day with each job stamped complete when it is done, because two weeks of that unbroken routine carries most lambs and kids past the age where they are easy prey, and the roster, not willpower, is what keeps it unbroken.