The Leghorn's big comb is her winter weak point
A Leghorn in very cold weather needs shelter from wind, watchful comb care, and plenty of feed from the first hard frost onward. Unlike heavy, fluffy breeds, a Leghorn is a slim Mediterranean layer with a tall single comb and long wattles that lose heat quickly and freeze at the exposed tips. She is hardy in spirit and keeps foraging in weather that sends rounder hens indoors, but that boldness can hide early frostbite. Her light body also burns more feed simply staying warm, so a Leghorn who looks bright can still be losing condition through a cold snap.
Roosts and shelter shaped for a light, flighty hen
A Leghorn needs a roost she can settle flat onto, because she warms her toes by sitting down over them through the night. A wide board with the broad side up works better for her than a narrow round pole in freezing weather. Keep roosts away from any gap where wind slips in at bird height, since moving air strips the warmth her feathers trap. Leghorns prefer roosting high, so check that the top roost does not sit in the coldest draft line under the roof vent. Ventilation belongs above the birds, letting moisture from droppings and breath escape without blowing across combs and feet.
Comb and wattle checks belong in the morning round
Look at a Leghorn's comb every morning during a freeze, starting with the rear points and the wattle edges where frostbite usually begins. Early frost damage looks pale, greyish, or slightly swollen before it darkens, and a hen showing it needs dry, still air rather than handling or rubbing, which tears fragile frozen tissue. Never bring one chilled hen into a warm house and then return her to the cold; steady conditions suit a Leghorn better than swings. Damp litter raises the risk sharply, because moist air in the coop settles on combs overnight, so fork out wet patches under the roost daily during cold spells.
Feed a Leghorn like the furnace she is
A Leghorn converts feed into eggs and motion rather than stored fat, so winter feeding for her means abundance and timing. Keep her layer ration available all day, and scatter a grain-heavy treat an hour before roosting so her crop is full for the long cold night. Frozen water cuts her feed intake within hours, so check drinkers at midday as well as morning and evening on the coldest days. If she is still laying through winter, offer a calcium source on the side as usual, since shell quality can slip when she eats less overall. Spread feed in more than one spot so lower-ranking Leghorns are not pushed away by flock mates.
Know which winter changes in a Leghorn need a vet
Call a veterinarian promptly if a Leghorn's comb develops blackened, weeping, or foul-smelling areas, if she stops eating for a full day, or if she sits hunched with her tail down and ignores the flock's morning feed rush. Frostbitten tips that stay dry often heal with time and protection, but damaged tissue that swells or smells has gone further. Laboured breathing in a bird kept in damp, dusty bedding also deserves same-day advice rather than waiting out the weather. Jotting each comb check and water visit in KinsLe through Care Teams gives every helper the same picture of your Leghorn's winter, with completed duties timestamped so a missed morning stands out at once.