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Q: What are the signs of mites or lice and how do I treat my birds if they have an infestation?

A:

Mites and lice are a common problem for chickens and can be carried in by wild birds, so keep that in mind. That means that if you have an infestation, it doesn't necessarily mean your management practices are bad. Don't get overwhelmed by guilt! There are some things that you just can't control... and birds landing in your trees or walking in your yard is probably one of them.

wild birds can bring illness and infestation to your chickens

Signs of parasite infestation in your flock's feathers

Mites inhabit your birds' feathers and suck their blood: they're like fleas, lice, or mosquitos that live in your hair---yuck!

Infestations of feather mites or lice can cause a reduction in laying, pale combs and wattles, anemia and even death! Infestations can also cause feather loss, usually on the back, because a bird may overpreen and pluck her own feathers in an attempt to get relief. It is similar to the loss of feathers caused by too much attention from a rooster. However, a rooster normally causes broken feathers, at least at first, whereas mites can cause feather loss down to the skin quickly--sometimes the skin is irritated and red! If you have mites or lice, you will need to treat your birds. But luckily, the types of lice and most mites that affect birds are not interested in humans.

A mite is so tiny, it's hard to see, and some types of mites only come out at night. If you have good vision, you may be able to see them around your bird's vent or beneath her wings, especially if your bird has light colored feathers (easier to see the mites against). Lice are larger, but they're lighter colored, too--they're nearly as hard to spot as mites.

Treating your chickens for mites or lice

There are various treatments for these avian parasites, but many involve using a pesticide dust or spray on your birds. This sounds sort of terrifying, but think of it like a flea dip for birds.

If your infestation is severe, you may want to use a pesticide that will kill them on contact to provide your birds relief. The dust treatment is nice, because chickens usually enjoy the feeling of dust in their feathers. Be careful when applying, though, that neither you nor your birds breathe it in. Be aware that your birds may decide to react to your kind ministrations by flapping their wings vigorously, making a real dust cloud, so be sure to hold them firmly. For application, we've used old spice shakers (clearly marked POISON). Other people prefer to fill a toe from an old pair of ladies hose with the powder and pat it on that way: the dust is so fine it filters through like a powder puff.

But why use pesticides if you don't have to? Do consider one of the great NON pesticide treatments. One spray uses essential oils to kill the parasites, and another spray uses a special type of salt used as a food additive to kill the parasites.

For a non-chemical dust, diatomaceous earth can help prevent and treat some types of mites and lice, however it works slowly by drying the bugs out. We do recommend using a few handfuls of DE in your birds' dusting areas to help prevent infestations from taking hold in the first place.

More info

You can read about treatment options here in this off-site PDF from Kansas State University.

When you apply your treatment, no matter which you choose, pay particular attention to the areas around their vents and beneath their wings. If you have a rooster make absolutely sure to treat him thoroughly. If your rooster has mites, he will spread it back around to the rest of your girls!

Scaly Leg Mites

Scaly leg mites can also cause problems for your birds, but they are treated differently from parasites that infest feathers. Your birds may have scaly leg mites if you notice the scutes (the scales on their legs) begin to lift up. This is cause by the mite waste building up beneath; it is painful and eventually debilitating for your birds.

Some people recommend treating scaly leg mites with things like WD-40, but that's a bad idea. WD-40 has strong fumes that the manufacturers warn can cause respiratory irritation, so it is bad for your birds' lungs and respiratory system. In addition WD-40 carries a caution recommendation that if it comes into contact with your skin, it should be immediately washed off. Purposeful application of this product to your birds is a very bad idea---don't listen to anyone who tells you to treat your birds with this product!

Here's how you DO treat for scaly leg mites: on your birds' legs, rub petroleum jelly or even an antibiotic ointment that uses petroleum jelly as a base. Some people prefer to use oil, or even something like a Pam cooking spray. You'll have to treat every two or three days for several weeks, and the scales may not return to normal.




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