Birds Nesting Under Solar Panels — Prevention and Removal

Why Do Birds Nest Under Solar Panels?

Solar panels create an almost perfect nesting environment. The gap between the panels and your roof tiles is warm, dry, sheltered from wind and rain, and hidden from predators like cats and birds of prey. For a pigeon or starling looking for somewhere to raise a brood, your solar panel system is better than any tree.

The problem is widespread across the UK. Once one pair of birds moves in, others follow quickly. We regularly see homes in Milton Keynes and Buckinghamshire with dozens of nests packed under a single array, sometimes within the first year of installation.

Which Birds Cause the Most Problems?

Pigeons are by far the biggest culprit. They are prolific breeders — producing up to six broods per year — and their nests are bulky, messy accumulations of twigs and droppings. Other common species include:

• Starlings — noisy in large numbers and known for squeezing into tight gaps
• House sparrows — smaller but equally persistent, often nesting in colonies
• Jackdaws — less common but build large stick nests that can block drainage channels

Pigeons are the species we deal with most often. They return to the same nesting site year after year, so once they find your panels the problem only gets worse.

What Damage Do Nesting Birds Cause?

This is not just a cosmetic nuisance. Birds nesting under solar panels cause real, measurable problems:

Blocked Gutters and Drainage

Nesting material, feathers, and droppings wash into your gutters every time it rains. Blocked gutters lead to water overflow, which can damage fascias, soffits, and even cause damp inside the property. We have seen gutter clearing bills of £150-300 per visit for homes with heavy pigeon activity.

Reduced Panel Efficiency

Bird droppings on the panel surface block sunlight. Unlike general dirt, pigeon droppings are thick, acidite, and do not wash off easily in the rain. Even partial shading from droppings can reduce the output of an entire panel string. A heavily soiled array can lose 10-20% of its generating capacity.

Wiring Damage

Birds peck at the DC cables and connectors running beneath the panels. Damaged wiring is a fire risk and will affect system performance. Replacing chewed cables typically costs £200-500 depending on accessibility, and the system may need to be partially dismounted.

Noise

Pigeons are noisy — cooing, scratching, and flapping, often starting before dawn. If the panels sit above a bedroom, this becomes a serious quality-of-life issue. We hear from homeowners who have lost sleep for months before calling us.

Health Risks

Pigeon droppings carry diseases including psittacosis, salmonella, and E. coli. Dried droppings become airite and can be inhaled. Bird mites from nests can also migrate into the property through roof spaces. This is a genuine health concern, not scaremongering — the NHS and Health and Safety Executive both flag pigeon droppings as a biohazard.

The Solution: Bird Mesh (Critter Guard)

The most effective and widely used solution is bird mesh, sometimes called critter guard or solar panel bird proofing. It is a galvanised steel or stainless steel mesh that clips around the entire perimeter of your solar array, sealing the gap between the panels and the roof.

How Bird Mesh Works

The mesh is secured using specialist clips that attach to the panel frames — no drilling into the panels or roof tiles is required. This means your panel warranty stays intact, and there is no risk of creating new leak points on your roof. The mesh is virtually invisible from the ground.

What Does Bird Proofing Cost?

For a typical domestic system (10-16 panels), bird mesh installation costs between £300 and £800. The price depends on:

• Number of panels — more panels means more perimeter to cover
• Roof access — scaffolding may be needed for two-storey properties, adding £200-400 to the cost
• Existing nest removal — if nests and droppings need clearing first, this adds time and cost
• Mesh quality — galvanised steel is standard; stainless steel lasts longer but costs more

How Long Does Bird Mesh Last?

Good quality galvanised mesh lasts 15-20 years. Stainless steel mesh can last the lifetime of the panels (25+ years). Either way, it is a one-off investment that eliminates an ongoing problem.

Can You Remove Bird Nests Yourself?

This is where it gets legally complicated.

Under the Wildlife and Countryside Act 1981, it is a criminal offence to intentionally disturb, damage, or destroy the nest of any wild bird while it is in use or being built. This applies to pigeons, starlings, sparrows, and all other wild birds. The penalties include unlimited fines and up to six months in prison.

In practical terms, this means:

• Active nests (with eggs or chicks) — you cannot remove them. You must wait until the young have fledged and the nest is no longer in use
• Inactive nests (empty, abandoned) — you can remove them legally
• Nesting season runs roughly from March to August, though pigeons can breed year-round in mild weather

Our advice: do not risk it. If you are unsure whether a nest is active, assume it is and call a professional. The legal consequences are not worth it, and disturbing nests is rarely effective anyway — the birds simply rebuild.

When to Call a Professional

Call a professional if:

• You can see nesting material, droppings, or birds regularly entering and leaving under your panels
• Your gutters are repeatedly blocking despite cleaning
• You notice a drop in solar generation that is not explained by weather or shading
• There is visible wiring damage or your inverter is showing fault codes
• You are experiencing noise disturbance from birds above bedrooms

A professional will safely remove inactive nests, clean the area, check for wiring damage, and install bird mesh to prevent the problem recurring. The whole job typically takes half a day for a standard domestic system.

DIY vs Professional Bird Mesh Installation

You can buy bird mesh kits online for £100-200. However, we strongly recommend professional installation for several reasons:

• Working at height — most solar panels are on two-storey roofs. Falls from height remain the leading cause of workplace death in the UK. Without proper scaffolding or harnesses, this is genuinely dangerous
• Panel damage risk — stepping on panels or leaning on them incorrectly can cause micro-cracks that permanently reduce output. These cracks are invisible to the naked eye
• Warranty concerns — incorrect fitting or accidental damage can void your panel and roof warranty
• Proper coverage — professionals know where the gaps are and how to seal them completely. A single gap means the mesh is worthless — pigeons will find it

The price difference between DIY materials and a professional job is typically £200-400. Given the safety risks and the importance of getting it right first time, professional installation is the better investment.

Should You Add Bird Proofing When Panels Are Installed?

Yes — absolutely. This is the single best piece of advice in this article.

Adding bird mesh at the time of solar panel installation is significantly cheaper than retrofitting it later. The scaffolding is already up, the installers are already on the roof, and fitting the mesh adds 30-60 minutes to the job. You avoid the cost of a separate scaffold hire and a second visit.

At Depth of Light, we offer bird proofing as an optional add-on with every installation. Most of our customers in Milton Keynes and the surrounding areas choose to include it — especially those who have seen what happens to neighbours' panels without it. The cost when bundled with installation is typically £150-300, roughly half the price of a standalone retrofit.

Prevention is always cheaper than cure. Waiting until birds have moved in means paying for nest removal, cleaning, potential wiring repairs, and then the mesh on top.

Other Deterrent Methods

You may see other bird deterrents marketed online. Here is our honest assessment:

• Plastic spikes — moderately effective on ledges but impractical for sealing the entire gap under panels. Pigeons often nest around them
• Ultrasonic deterrents — limited evidence they work long-term. Birds habituate to the sound within weeks
• Fake predators (owls, hawks) — pigeons work out they are fake very quickly. Not a serious solution
• Bird gel — sticky gel applied to surfaces. Can trap small birds, which raises animal welfare concerns. Not recommended

Bird mesh remains the only reliable, long-term solution. Everything else is a temporary measure at best.

What Depth of Light Offers

We provide bird proofing both as part of new solar panel installations and as a standalone service for existing systems. Our approach:

• Full inspection of the array and wiring
• Safe removal of inactive nests and debris
• Thorough cleaning of the panels and roof area
• Installation of high-quality galvanised or stainless steel mesh
• Photo documentation of the completed work

We cover Milton Keynes, Buckinghamshire, Bedfordshire, and surrounding areas. Get in touch or use our solar calculator if you are planning a new installation and want bird proofing included from day one.

Frequently Asked Questions