Chicken mites are tiny external parasites that feed on your birds’ blood and skin, and left unchecked they cause anemia, drop egg production, and can kill a flock. The two you will meet most are the red mite, which hides in coop cracks and feeds at night, and the northern fowl mite, which lives right on the bird. The fix is a one two punch: treat the birds and treat the coop, then repeat in a week to catch the eggs that hatch.
Key Takeaways
What Are Chicken Mites?
Chicken mites are small arachnids, often smaller than a pinhead, that live on or near poultry and feed on blood and skin cells. The most common troublemakers for backyard flocks are the red mite (Dermanyssus gallinae) and the northern fowl mite (Ornithonyssus sylviarum). They matter because heavy infestations drain enough blood to cause anemia, which shows up as pale combs, weakness, dropped egg production, and in severe cases death, especially in chicks and broody hens who sit still and cannot dust bathe.
The key difference is where they live. Red mites spend the day hiding in cracks, roost ends, and nest box seams, then crawl onto the birds at night to feed, so you may not see them on a hen during the day at all. Northern fowl mites live on the bird around the clock, clustering near the vent. Knowing which you are dealing with tells you where to focus treatment. For the bigger picture of flock ailments, our guide to common chicken diseases and their symptoms puts mites in context.
How to Identify a Chicken Mite Infestation
Start with the birds. Part the feathers around the vent and tail, where mites gather, and look for tiny moving specks, dirty looking clumps at the feather base, or scabby, irritated skin. Northern fowl mites often leave the vent feathers looking darkened and greasy. A hen with a pale, washed out comb and lower energy may be losing blood to mites.
Then check the coop at night, because that is when red mites come out. Take a flashlight to the roosts after dark and look along the underside and the ends where they meet the wall. Running a white paper towel along the roost can pick up smears of red or gray. Other tells are hens who suddenly refuse to roost in their usual spot, mites visible on eggs in the nest box, or little specks crawling on your arms after you collect eggs. The Alabama Cooperative Extension System has good identification photos if you want to confirm which mite you have.
How to Get Rid of Chicken Mites
Treat the birds and the coop on the same day, or you will just chase the mites back and forth. For the birds, use a poultry-approved permethrin dust or spray, applied per the label, working it into the feathers around the vent, under the wings, and along the back. Treat every bird, not just the itchy ones. For the coop, remove and dispose of all bedding, then dust or spray roosts, nest boxes, and especially the cracks and crevices where red mites hide.
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The step people skip is the repeat treatment. Mite eggs are not killed by most treatments, so you must treat again in 7 to 10 days to wipe out the mites that have since hatched, and often a third time. Skipping the follow-up is the number one reason infestations come roaring back.
Food-grade diatomaceous earth can help as a supplemental and preventive dust in the coop and dust bath, though it works more slowly and should be applied carefully to avoid breathing the dust. A thorough coop cleaning is central to both treatment and prevention, and our guide to keeping your chicken coop clean and healthy walks through it.
How to Prevent Chicken Mites
Prevention comes down to clean housing, dust bathing, and quarantine. Keep the coop clean and dry, clear out old bedding regularly, and seal or treat the cracks where red mites breed. Give your flock a good dust bath area, since dust bathing is how chickens naturally control external parasites, coating their skin and feathers with fine dust that suffocates mites.
Quarantine any new birds for a couple of weeks before adding them to the flock, since new arrivals are a common way mites enter a coop. Discourage wild birds from roosting on or near the coop, as they can carry mites in. Check your flock’s vent feathers every few weeks, especially in warm months when mites breed fastest, so you catch a problem while it is small. Keeping a healthy, well managed flock in a clean coop, as covered in our backyard chicken basics, is the best long term defense.
Frequently Asked Questions About Chicken Mites
How do I know if my chickens have mites?
Check the vent and tail feathers by day for tiny moving specks, dirty clumps at the feather base, or scabby skin, and check the roosts at night with a flashlight for red mites. Pale combs, a drop in laying, and hens refusing to roost are also warning signs.
How do you get rid of chicken mites fast?
Treat every bird with a poultry approved permethrin dust or spray and treat the coop (bedding, roosts, and cracks) on the same day, then repeat in 7 to 10 days to kill newly hatched mites. Treating only the birds or only once lets the infestation rebound.
Does diatomaceous earth kill chicken mites?
Food grade diatomaceous earth can help as a supplemental and preventive dust in the coop and dust bath, but it works slowly and is not reliable as the only treatment for an active infestation. Use permethrin for a fast knockdown and diatomaceous earth for ongoing prevention, applied carefully to avoid inhaling the dust.
Can chicken mites live in my house or on humans?
Chicken mites can bite people and hitch a ride indoors, causing temporary itching, but they cannot live on humans or reproduce off poultry. They will die off without birds to feed on, though red mites can survive a surprisingly long time in a coop between meals.
How often should I check for mites?
Check your flock every few weeks, and more often in warm weather when mites breed fastest. A quick look at the vent feathers and a nighttime flashlight check of the roosts catches most problems while they are still small and easy to treat.
