Give the Harlequin a pen she cannot hurt herself in
A Harlequin rabbit weathers fireworks indoors, in a pen arranged so that a sudden bolt ends in hay rather than hardware. Harlequins are a substantial, muscular breed, and a startled thump-and-dash can bruise or break something against bare bars, so line the pen's likely impact zones with hay bales or folded fleeces and remove hard toys, ceramic bowls, and anything with an edge. Her hide box needs to fit her whole stretched length, packed with hay she can nose into. Set all of this up on the side of the house furthest from the display, curtains drawn, before the light goes.
Companionship does the calming for this breed
Where a Harlequin rabbit has a bonded partner, the pair should spend fireworks night together in the pen — rabbits take their safety reading from each other far more than from people. Two rabbits loafing flank to flank through a bang will settle each other in a way no stroking can. If she is a single rabbit, your calm presence in the room, reading or working quietly without repeatedly approaching the pen, is the next best signal. Resist picking her up: a held rabbit cannot flee, and that helplessness is the frightening part.
Sound, light, and the layers between her and the sky
Layer the room against the display in the order she experiences it. Close windows and curtains against the flashes first, since sudden light in a dark room startles rabbits as sharply as noise. Then add a constant, ordinary sound — the television or radio at its usual volume — so each bang arrives against a background instead of out of silence. A fleece over the pen's roof section deepens the burrow feeling, but leave the pen's sides open to the room's air so she does not overheat under cover.
Doors, guests, and the garden ban for the night
The Harlequin's safety plan fails at the front door, not the pen. Keep her room's door shut all evening, tell every guest the rabbit room is closed, and cancel her garden exercise from mid-afternoon — a rabbit caught outdoors at the first bang may clear a fence she has respected all year. If she normally free-roams the house, pen her early with a favourite herb sprig rather than rounding her up under firework noise, which pairs your hands with the frightening sounds in her mind.
After the last bang: appetite is the verdict
Judge how your Harlequin coped by what she does at the next two feeds. A rabbit back on her hay, producing normal droppings, and stretching out in the open by morning was frightened but fine. One who refuses food into the next day, hides past her active hours, or shows a discharge or injury from a collision needs a vet visit that day — digestive slowdown after stress is the rabbit emergency that hides behind a quiet animal.
Her profile carrying KinsLe's Lost Pet Alert System means the closed-door plan has a second layer: if your Harlequin ever slips past a guest into the night, nearby members are alerted free and can message you the moment she is spotted.