Why Orpingtons cannot save themselves
A Buff Orpington is one of the heaviest common laying breeds, broad, heavily feathered, and placid. That temperament is lovely in the garden and useless in a predator encounter: these hens do not flush and fly to safety like lighter breeds, they waddle, and anything that gets inside the fence catches them. The enclosure therefore carries the entire burden of protection, and it has to be built as if the birds will simply stand there — because they will.
It also means roosts and ramps should stay low. A heavy hen coming down from a high perch lands hard, and an injured bird separated from the flock at ground level overnight is the first one taken.
Hardware cloth, not chicken wire
The single most important material choice for Orpingtons is small-gauge hardware cloth in place of hexagonal chicken wire. Chicken wire keeps chickens in; it does not keep predators out. A raccoon can tear it, a dog can burst it, and a raccoon working from outside can reach through its wide holes and pull a roosting hen to the wire piece by piece — the classic loss pattern for heavy breeds that sleep soundly against a wall.
Use hardware cloth with openings small enough that a paw cannot pass, secured with screws and washers rather than staples a raccoon can pry out one by one. Run it over window openings, vents, and any gap at the eaves. Replace any section that has rusted thin, because weakened cloth tears at exactly the pressure point a predator tests nightly.
Stopping diggers, climbers, and things from above
Foxes and dogs dig, so lay an apron of the same mesh flat on the ground extending outward from the run wall and pin or bury it lightly; a digger starting at the wall meets mesh under its paws and almost always gives up rather than backing up to start again. Weasels need no digging at all — they pass through any hole their head fits, which is another reason the small mesh has to be continuous, with no forgotten gap where the run meets the coop.
Cover the run. Hawks take Orpingtons readily since the hens are slow to react, and a netted or solid roof also keeps climbing raccoons from dropping in from a fence top or an overhanging branch. Trim branches that overhang the run; they are ladders in both directions.
The dusk routine that does the real work
No fence fully substitutes for a solid coop at night. Orpingtons put themselves to bed early and predictably, which makes the routine easy: food and water secured so they do not draw rats and raccoons, every hen counted onto the roost, pop door shut and latched with a two-step fastening a raccoon's hands cannot work. Check the apron edge and door bottom weekly for the scratched soil that announces a dig attempt while it is still only an attempt.
A hen found with wounds, missing feathers along the back, or a sudden reluctance to leave the coop should be seen by a veterinarian promptly, as bites from even a small predator infect quickly in poultry.
Give the dusk shut-in and the morning release to specific people in KinsLe Care Teams, so a missed lock-up shows up as an unchecked task instead of a lost flock.