From Pests to Infested: Two Mites and Parasites of Urban Birds 2026

Parasitism, in ecological terms, means that a given species lives, feeds, and reproduces at the expense of a host species. It is a path promoted by evolution through natural selection that does not carry a moral character; it represents the fruit of a long series of evolutionary pressures exerted on certain species, leading to a remarkable specialization of traits. The result of this mechanism is very varied: some species are parasitic on only one host species, others must parasitize multiple predefined species, and still others may prefer one host but occasionally exploit other species to parasitize.

In this sense, birds, as host species, are no exception, and even humans—directly or indirectly—find themselves sharing a long list of parasites with them.

We do not intend to exhaust the topic in these lines (that would be presumptuous, to say the least), but only to illustrate two of the main parasites that a trained professional can commonly encounter in their field of work.

Argas reflexus (Pigeon Soft Tick)

The body is strongly flattened, equipped with four pairs of legs, has no eyes, and the rostrum is located ventrally. A blood-feeding ectoparasite of Columba livia, it has modified its lifestyle, becoming increasingly endophilic and synanthropic.

This species is perfectly adapted to urbanized environments, and its presence has been reported in almost all Italian regions except the southernmost ones. The complete development cycle varies between 1 and 3 years depending on environmental conditions; females can lay up to a hundred eggs in three clutches per season, usually spaced 5–6 weeks apart.

Typically, the activity period is summer; a peculiarity is its ability to compensate for water loss by absorbing it directly from the atmosphere at relative humidity above 75%. Its behavior is guided by a strong negative phototropism, which drives it to seek shelter during the day (cracks, crevices, baseboards, etc.), while at night it locates the host through special chemoreceptors that intercept carbon dioxide emitted by respiration.

The blood meal in adults is very rapid (about 20–30 minutes), and the period it can remain fasting is a record: 7 years.

In cases of large infestations or in the absence of pigeons to parasitize, it can attack humans, making it one of the mites with great health significance. The bite can cause skin rashes and erythematous-papular lesions. While it is excluded that it can transmit Lyme disease, the secondary reactions that may occur can be toxic or anaphylactic.

Dermanyssus gallinae (Red Poultry Mite or Bird Mite)

Also known as the red mite of poultry, it is a hematophagous ectoparasite that measures about 1 mm in length, with a grayish-white color that turns reddish after feeding. It is an obligate parasite of birds, but in the absence of its preferred host, it can attack mammals, including humans.

This mite is particularly active in the warm months, but in urban environments, it can be active year-round due to the presence of heated structures such as attics, lofts, and ventilation systems. The life cycle is rapid: from egg to adult in about 7–10 days under optimal conditions, allowing multiple generations per season.

Females lay eggs in cracks and crevices near bird nests, and the larvae do not feed; they molt into nymphs, which then seek a blood meal. Adults feed at night and hide during the day, making detection difficult. Infestations often go unnoticed until the mites become numerous enough to wander into living spaces in search of new hosts.

In humans, bites cause intense itching, dermatitis, and sometimes secondary infections from scratching. The mite is not known to transmit human diseases, but its presence can cause psychological distress and allergic reactions.

How to Identify an Infestation

• Small reddish or black dots on bedding, walls, or furniture (mite droppings or crushed mites).
• Unexplained itching or bites on the arms, neck, and face, especially at night.
• Sighting of mites crawling on surfaces near windows, vents, or bird nests.
• Bird activity on the roof, balcony, or in eaves, suggesting a nearby nest.

Health and Control Measures

Both Argas reflexus and Dermanyssus gallinae are primarily nuisances, but they can cause significant discomfort and, in rare cases, severe allergic reactions. For homeowners and property managers, the first step is to remove bird nests and seal entry points to prevent roosting. Professional pest control may be necessary, especially for large infestations.

When dealing with raccoons or other wildlife that may bring mites into the home, it is important to choose the right products. For instance, the best poison for raccoons can help manage these animals humanely and effectively, reducing the risk of secondary pest issues.

Prevention Tips

• Install bird spikes or netting on ledges and roofs.
• Seal cracks and crevices in walls, eaves, and attics.
• Remove bird feeders and bird baths from near the house.
• Use mite-proof covers on mattresses and pillows if an infestation is suspected.
• Vacuum frequently and dispose of the vacuum bag outdoors.

For more tips on keeping your yard and home pest-free, check out these guides on yard and outdoors and home and garden maintenance.

Frequently Asked Questions

Can bird mites live on humans?

Bird mites prefer bird hosts, but they will bite humans if birds are not available. They cannot reproduce on human blood, so infestations are usually temporary once the bird nest is removed.

How do I know if I have pigeon ticks or bird mites?

Pigeon ticks (Argas reflexus) are larger, flat, and have a leathery appearance; they hide in cracks and come out at night. Bird mites (Dermanyssus gallinae) are tiny, grayish-white, and turn red after feeding. Both are often found near bird nests.

What is the best way to get rid of these parasites?

Remove the bird nest and clean the area thoroughly. Use a vacuum with a HEPA filter, seal entry points, and apply a residual insecticide labeled for mites. For severe cases, consult a pest control professional.

Are these parasites dangerous to pets?

Yes, both mites and ticks can bite dogs, cats, and other pets, causing itching and skin irritation. Keep pets away from infested areas and consult a veterinarian if symptoms appear.

Can I prevent bird mites from entering my home?

Yes, by preventing birds from nesting on or near your home. Install bird deterrents, seal gaps, and regularly inspect eaves, vents, and attics for signs of nesting.

Understanding the biology and behavior of these urban bird parasites is key to effective management. By taking proactive steps, you can protect your home and health from these unwelcome guests.