🐔💊

A Practical Chicken Deworming Schedule

Worms and mites are part of keeping chickens — the goal isn't to panic, it's to stay on a sensible rhythm so a small problem never becomes a flock-wide one.

A note first: products, doses and egg-withdrawal periods vary by country and brand, and worm burdens differ by climate and ground. Treat this as a general cadence, not a prescription — for the right product and dose for your birds, ask your vet, and follow the label exactly.

How often to worm

Most backyard keepers worm their flock twice a year — typically spring and autumn — as a baseline. Flocks on small, fixed runs that can't be rotated, or in warm wet climates, often need worming every 3–4 months because worm eggs build up in the soil. Free-ranging birds on fresh ground usually need it less often. Rather than worming blindly, many keepers ask a vet to run an occasional faecal egg count, which tells you whether treatment is actually needed.

Signs your birds may have worms

Weight loss or a thin breastbone despite eating well
Pale comb and wattles
Dropping egg production
Loose, off-colour or foamy droppings
Worms visible in droppings (in heavy infestations)
A generally hunched, dull, ruffled look

Mites & lice: a separate, faster cycle

External parasites move fast in warm weather, so check birds roughly every 2–4 weeks in summer. At dusk, part the feathers around the vent and under the wings and look for tiny moving specks, clusters of pale eggs at the feather base, or scabby skin. Treat at the first sign. The key detail most keepers miss: most mite and lice treatments need a second dose about 7 days later to kill newly hatched parasites — skip it and the cycle just restarts.

Prevention that does the heavy lifting

Keep the coop dry and well-ventilated; clean droppings regularly.
Provide a dry dust-bathing spot — birds deparasite themselves.
Rotate or rest the run so worm eggs in the soil die off.
Quarantine new birds for two weeks before they join the flock.

Why you need a dated record

The whole schedule falls apart on memory. "I think I wormed them in spring" isn't enough to know if you're due, and forgetting the 7-day mite re-dose is the single most common reason treatments fail. A dated log of every product and date turns guesswork into a plan you can actually follow.

Keep a free flock health record →

I built ChickenLog so you can log each worming and mite treatment with its date and product, for the whole flock or a single bird — so you always know what you used and when the next dose is due. Free, private, offline.