Pigeons under solar panels: signs, risks and how to stop them

Updated 6 November 2026 · By the Solar Panel Cleaners team

Short answer: Pigeons nest under rooftop solar panels because the gap is warm, dry and sheltered. Signs include birds flying in and out, droppings on the roof and panels, cooing or scratching noises and twigs in the gutters. The usual fix is to clear the nests once they are inactive, clean the panels and fit mesh around the array with non-drill clips, which typically costs £300 to £800 for a home.

Pigeons under solar panels: signs, risks and how to stop them

Why pigeons choose solar panels

Feral pigeons naturally nest on cliff ledges and in sheltered crevices. The space between a pitched roof and a solar array copies that perfectly: it is protected from wind, rain and predators, warmed by the panels, and has a flat surface on the tiles below. Pigeons also return to the same nesting sites, and a successful pair often attracts others. Once one array on a street is occupied, neighbouring roofs are often next.

Signs pigeons are nesting under your panels

Pigeons repeatedly landing on the roof and disappearing under the array
Cooing, scratching or flapping sounds from the roof, especially early morning
Droppings on the panels, roof tiles, windowsills, car or patio below
Twigs, feathers and nesting material poking out from under the panels
Gutters or downpipes overflowing because they are blocked with debris
An unpleasant smell near the eaves in warm weather

The problems they cause

Problem	Why it matters
Droppings on panels	Opaque fouling shades cells and reduces output
Nesting debris	Holds moisture against tiles and can block gutters
Blocked gutters	Overflowing water can cause damp in walls and fascias
Cable damage	Birds and nesting material can rub or disturb cables under the array
Noise and mess	Cooing and droppings around doors, windows and cars
Health concerns	Accumulated droppings can carry bacteria and fungal spores, so clearing them needs care

What the law says

In Great Britain, the Wildlife and Countryside Act 1981 protects most wild birds, their eggs and their nests while in use or being built. Feral pigeons are wild birds under the Act, but they can be controlled in some circumstances under general licences issued by the relevant nature agency, such as Natural England. In practice, responsible proofers check for eggs and chicks before clearing nests. If an active nest is found, they wait until the young have fledged and then proof the array.

Pigeons breed through most of the year in the UK, so there is no single safe season, but checking carefully before work starts avoids breaking the law and avoids trapping birds under the mesh. Other species occasionally nest under panels, and some, such as house sparrows and starlings, have the same protection while nests are in use.

Options compared

Method	How well it works under panels
Mesh skirt with non-drill clips	The standard fix, blocking access around the whole array
Spikes on the panel edges	Limited, as birds can still get underneath
Gel or visual deterrents	Short term at best, and can soil the panels
Repeated cleaning alone	Removes mess but does not stop birds returning
Removing nests without proofing	Birds usually rebuild within weeks

What proofing involves

A proofing visit usually starts with access, because the work is at the edge of the array rather than from the ground. Depending on the roof, that may be a roof ladder, scaffold tower, cherry picker or scaffolding. Inactive nests and debris are cleared from underneath, the panels are cleaned, and galvanised or PVC-coated mesh is fixed to the panel frames with clips that grip the frame rather than drilling it. The mesh follows the edge of the array and closes any gaps between rows.

For a typical home, bird proofing usually costs £300 to £800 including clearing nests and a clean. It is usually a one-off job, and it often costs less over a few years than repeatedly cleaning panels that pigeons keep fouling.

If you are having panels fitted in an area with plenty of pigeons, ask the installer about fitting mesh at the same time, while scaffolding is already up. It is cheaper than arranging access later and stops the problem before it starts.

Questions to ask a bird proofing company

How will you check for active nests, and what happens if you find eggs or chicks?
Will nests and droppings be cleared out before the mesh goes on?
What mesh and clips do you use, and do the clips drill the panels or the roof?
How will you reach the edges of the array, and is access included in the price?
Will the panels be cleaned as part of the job?
Will gutters below the array be cleared of nesting debris?
Can you send photos of the finished proofing?

Clearing droppings needs some care. Dried pigeon droppings can carry bacteria and fungal spores, so proofers usually dampen them before removal to keep dust down and wear suitable protection. Debris should be bagged and taken away, not swept into gutters. A clear answer to each of these questions is a good sign that the job will be done properly and will last.