Pest bird · Columba livia · Last updated 24 August 2026
Pigeons
The feral pigeon (Columba livia) produces droppings with a pH of 3 to 4.5 that degrade concrete, zinc and limestone. 1 pair produces 2 to 6 broods per year. The droppings carry salmonellosis, chlamydiosis and cryptococcosis.
On site within 24h
Protective installations (UV-resistant polyethylene netting, stainless steel spikes, tensioned wires) prevent roosting without harming the birds. Their lifespan is 10 to 15 years depending on the system. Capturing or directly eliminating pigeons is regulated by the Belgian law of 12 July 1973.
Identify
Signs of infestation
- Build-up of whitish droppings on ledges, cornices, gutters and horizontal surfaces
- Nesting material (twigs, feathers, debris) blocking gutters and vents
- Regular, noisy presence at dawn and dusk on roof features
- Visible material degradation: blistered render, corroded metal, damaged zinc joints
Where it's found
The feral pigeon (Columba livia domestica) uses any horizontal feature out of predators' reach: window ledges, cornices, flat roofs, railings, service ducts and bridge structures. In urban areas, it lives in colonies that can exceed 50 individuals per site.
Impact
Associated risks
Structural damage
Pigeon droppings have a pH of around 3 (acidic). They corrode zinc, limestone and render within a few years. Build-up steadily degrades facades and gutter systems.
Health risks
Dried droppings, aerosolised during cleaning, carry Histoplasma capsulatum, Cryptococcus neoformans and Chlamydia psittaci (psittacosis: fever, cough, possible pneumonia). Cleaning without P3 respiratory protection is prohibited.
Brussels regulations
Feeding pigeons on public roads is banned under general police regulations in all 19 Brussels municipalities, with fines ranging from €50 to €350 depending on the municipality and repeat offences. In Wallonia, rules vary by municipality.
Good practice
Prevention
- 01Install anti-roosting spikes or nets on every horizontal ledge: the only lasting method without repeat intervention
- 02Block gutter and vent openings with 2 cm stainless steel mesh
- 03Never feed pigeons, even indirectly (food scraps left on a terrace): the colony always returns to wherever it found food
Frequently asked questions
What you're asking
Are pigeon droppings really corrosive?
Yes. Pigeon droppings have a pH of 3 to 4.5 — as acidic as vinegar. They attack concrete, limestone, zinc and paint. On a roof, a 2-to-3-year build-up can cause water ingress and accelerate structural degradation.
Is anti-pigeon netting allowed in Belgium?
Yes. Installing polyethylene netting and stainless steel spikes is legal and recommended. Capturing or directly eliminating pigeons is regulated by the law of 12 July 1973 on wildlife protection. Physical deterrence methods don't harm the birds.
How long does anti-pigeon netting last?
Professional-grade UV-resistant polyethylene netting lasts 10 to 15 years depending on exposure. Stainless steel spikes are guaranteed rust-free for 10 years. Antinox guarantees the installation for 2 years against any fitting defect.
Bird Control
Related pests
pigeons problem?
Intervention within 24h, price confirmed before treatment.