Red mite and mites in geese: symptoms, control and biosecurity
The poultry red mite (Dermanyssus gallinae) is a blood-feeding mite that feeds at night and hides in the crevices of buildings. In geese it is rarer than in hens, but it can appear in housing with perches and cracks and when equipment is reused. Learn how to recognise it, control it and keep records.
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What is red mite and why discuss it for geese?
The poultry red mite (Dermanyssus gallinae), also called the red mite, is a tiny arachnid that feeds on the blood of birds. It feeds at night and by day hides in wall crevices, perch joints, under battens and in equipment. In waterfowl, including geese, red mite is rarer than in hens — geese have greasy, waterproof plumage and regular access to water, which makes it harder for mites to stay on the bird. Even so, in housing with perches, wooden parts and many crevices, and where equipment is reused, mites and feather lice can appear, especially in goslings and during the breeding period. More on keeping the birds: Goose farming.
Are geese at the same risk as hens?
Not to the same degree — and that is worth stating honestly. Red mite is a classic problem of layer houses, where birds sleep on perches full of crevices. Geese are more often kept on litter with access to a run and water, so mite pressure tends to be lower. The risk does rise where geese roost in old wooden buildings with many hiding places, where equipment moves between flocks without disinfection, or where wild birds enter the buildings. Mites do not disappear on their own — they survive a long time in an empty building and wait for the next birds.
What are the symptoms of an infestation in geese?
With a real infestation, geese become restless, especially at night, scratch and pluck their plumage (itching). With large numbers of mites there is blood loss and, consequently, anaemia — pale mucous membranes, weakness and poorer condition. You see worse feed use, slower growth in goslings, and damaged, soiled plumage. In breeding birds, restlessness and stress can affect egg laying. It is also worth inspecting the building itself: mite clusters may be visible as grey-red deposits in perch crevices and along battens.
How to detect red mite in the building?
The most reliable method is a night-time inspection — red mite feeds after dark, so looking into perch crevices, joints and nooks in the dark (with a torch) reveals the most. By day, simple traps help: rolled cardboard or strips of cloth placed in crevices, which the mites colonise as hiding places and which are easy to check. You also inspect the birds’ plumage, especially under the wings and around the vent, for mites and feather lice. On the broader approach to flock health: Goose diseases and Poultry diseases — symptom table.
Why act and keep records?
Mites weaken the birds, open the way for secondary infections and can carry some pathogens between birds. From the farm’s point of view it is important to plan and record every intervention — cleaning, disinfection, use of a product. If you use a veterinary product, treatment records and a withdrawal period before slaughter apply to you. DlaFerm.pl lets you keep the Flock Card and these records digitally, so everything is at hand during an inspection. See also: Treatment records and drug withdrawal.
How red mite and mites hit a goose flock
Each of these signals should prompt the farmer to inspect the building and consult a veterinarian.
Restlessness, especially at night
Red mite feeds after dark, so geese can be restless at night — moving around, flapping, resting worse. Night-time restlessness across the whole flock is an important warning sign.
Itching and feather plucking
Birds scratch intensively and pluck their plumage trying to get rid of parasites. Excessive preening and irritability may point to mites or feather lice.
Anaemia
With large numbers of blood-feeding mites, birds lose blood. Signs include pale mucous membranes, weakness and apathy. In goslings anaemia is especially dangerous.
Poorer condition and growth
Stress, blood loss and lack of rest translate into worse feed use and slower growth. Flock non-uniformity is often the first measurable signal.
Damaged, soiled plumage
Constant plucking and the presence of mites and their droppings worsen feather quality. This matters especially in breeding flocks and in welfare assessment.
Mite deposits in crevices
Grey-red clusters in perch joints, under battens and in equipment are direct evidence of infestation. They are best seen during a night-time inspection with a torch.
How to prevent red mite and how to act during an infestation
An effective approach combines building hygiene, sealing hiding places, bird welfare and — where needed — products used strictly on veterinary advice.
Cleaning and disinfection between flocks
Thorough removal of litter and debris, washing and disinfecting the building during the break between flocks reduces the mite population that survives in an empty building. This is the foundation: Poultry farm biosecurity.
Sealing crevices and hiding places
Red mite hides in perch joints, under battens and in cracks. Filling and smoothing crevices and a simpler, easy-to-clean structure deny mites places to hide. See: House requirements for geese.
Dry litter and good conditions
Keeping litter dry and friable with proper ventilation improves hygiene and hampers parasite development. More: Poultry house litter — management.
Access to water and preening
Geese are waterfowl — access to water for bathing and preening supports natural hygiene and feather condition, which makes it harder for mites to stay on the bird. This is part of welfare: Goose welfare.
Biosecurity and limiting wild birds
Controlling entry and equipment and protecting buildings from wild birds limits the introduction of mites and lice. See: Vehicle entry and deliveries — biosecurity.
Products only on veterinary advice
Supporting agents (e.g. diatomaceous earth / silica) and acaricides are chosen carefully. Use veterinary products only on a vet’s instructions, observing the withdrawal period, and record them. Consult: Veterinarian and Treatment records and drug withdrawal.
Frequently asked questions about red mite and mites in geese
Can geese get red mite?add
Yes, although less often than hens. Geese have greasy, waterproof plumage and access to water, which makes it harder for mites to stay on the bird. The risk rises in housing with perches and crevices and when equipment is reused, especially in goslings and during the breeding period.
How do I recognise a red mite infestation?add
Typical signals are restlessness at night, itching and feather plucking, pale mucous membranes (anaemia) and poorer condition. In the building you may spot grey-red mite clusters in perch crevices and under battens, best seen during a night-time inspection with a torch.
How do I check whether mites are in the building?add
A night-time crevice inspection is most effective, because red mite feeds after dark. Simple traps also help — rolled cardboard or strips of cloth placed in crevices, which the mites colonise. It is also worth inspecting the birds’ plumage under the wings and around the vent.
How do I control red mite in geese?add
Hygiene is the foundation: removing litter, washing and disinfecting and sealing crevices between flocks. Welfare — dry litter and access to water — supports the birds. Use products (diatomaceous earth, acaricides) strictly on a veterinarian’s instructions and with the withdrawal period observed.
Does access to water help geese?add
Yes. Geese are waterfowl — bathing and preening support natural hygiene and feather condition, which makes it harder for mites to stay on the bird. Access to water is also part of welfare, described in the guide on goose welfare.
How does DlaFerm.pl help with mites?add
DlaFerm.pl lets you keep the Flock Card and digital treatment and withdrawal records — the required documentation for every use of a veterinary product. You can also note inspections and hygiene actions, so everything is available during a veterinary or inspection visit.
Sources & resources
- linkMSD Veterinary Manual — Mites of Poultry (Dermanyssus gallinae)
- linkEFSA — scientific opinions on poultry health and welfare
- linkChief Veterinary Inspectorate Poland — information for poultry farmers
- linkNational Veterinary Research Institute — PIWet (Puławy)
- linkWOAH — World Organisation for Animal Health
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