Pigeons Under Solar Panels: Why Birds Nest There and How to Stop It

Why do pigeons nest under solar panels?

Pigeons nest under solar panels because the space between the panels and the roof gives them almost everything they look for in a nesting site. It is covered from rain and wind, it holds warmth from the sun and the roof, and it is too tight for most predators to follow them into. To a pigeon, a rooftop array is a ready-made shelter with a flat, protected floor.

Once a pair settles in, they tend to stay. Pigeons are loyal to a good nesting spot and can raise several broods through the warmer months, so a single pair can soon become a small colony. Other birds, such as sparrows and mynas, may use the same gap for the same reasons.

Pigeons do not need a large opening to get in. If a bird can fit its head and shoulders through, it can usually squeeze the rest of the way, and the edges of most arrays leave plenty of room. That is why birds show up under panels on all sorts of homes, whatever the roof type or the age of the system.

• Shelter from rain, wind and direct sun
• Warmth held by the panels and roof surface
• A narrow entry that keeps predators out
• A height that feels safe from people and pets

Signs you have birds nesting under your solar panels

Most homeowners notice the noise first. Cooing in the early morning, scratching or shuffling on the roof and the flap of wings overhead are all common. If you stand back in the yard or across the street, you may see birds landing on the panel edges and disappearing underneath, then reappearing a few minutes later.

The mess is the other giveaway. Droppings build up on the panel glass, the roof, gutters and the paths or outdoor areas below. You might also find feathers, twigs and bits of nesting material washing out of the downpipes after rain. Keep your observations to ground level; there is no need to go up a ladder to confirm what you are seeing.

• Cooing, scratching or wing noise coming from the roof
• Birds flying in and out at the edges of the array
• Droppings on panels, gutters, paths and outdoor furniture
• Feathers or twigs collecting in gutters and around downpipes

What problems do pigeons under solar panels cause?

The most direct problem for your system is droppings on the glass. Unlike dust, droppings sit in thick, stubborn patches that block sunlight from reaching the cells underneath. A covered cell can also warm up more than the cells around it, creating what is known as a hot spot, which is not something you want sitting on a panel for months at a time. Rain rarely washes these patches away, and the longer they bake in the sun, the harder they are to shift.

Around the rest of the house, the issues are mostly about mess, noise and hygiene. Droppings stain paths, decks and outdoor furniture, and material from nesting can make its way into gutters. Bird droppings are not something you want near entertaining areas, washing lines or where children play, so it is sensible to handle any clean-up at ground level with care and good hand hygiene.

• Droppings blocking light on the panel glass
• Possible hot spots under heavy, baked-on patches
• Early morning noise from roosting birds
• Stained paths, outdoor areas and gutter build-up

Do spikes, fake owls and bird scarers work on solar panels?

They can seem to help for a week or two, but they are rarely a lasting answer. Pigeons are quick learners. A plastic owl that never moves soon becomes part of the scenery, and reflective tape, spinners and noise devices tend to lose their effect once the birds realise nothing happens.

Spikes have a different weakness. They stop birds perching on a ledge, but the real attraction is the gap underneath the panels, and spikes do not close that gap. Birds simply land nearby and walk in. Anything that relies on scaring birds away is working against a strong instinct to return to a proven nesting site, which is why the physical barrier approach is the one that holds up.

It is also worth avoiding anything that sprays, sticks or gets pushed under the panels. Gels, foams and loose netting can foul the panel frames, trap birds or leave residue on the glass, and stuffing material into the gap can hold moisture and debris against the roof. A properly fitted mesh barrier around the edge does the job without those side effects.

What can you do about pigeons while you wait for bird proofing?

There are a few sensible things you can do at ground level. Avoid leaving out pet food, bird seed or uncovered bins, because an easy food source gives pigeons another reason to hang around. Bring cushions and washing in if birds are roosting above, and wear gloves when you hose or sweep droppings off paths and outdoor areas, then wash your hands afterwards.

What you should not do is go up on the roof, try to push anything into the gap or disturb a nest. Working at height is dangerous, and blocking the gap without knowing what is underneath can trap birds. Keep a note of where you see birds going in and out, and share it when you enquire, as it helps with planning the job.

How mesh bird proofing stops pigeons under solar panels

Mesh bird proofing closes off the space that birds are using. A strong mesh skirt is fitted around the outside edge of the array, running from the panel frames down to the roof surface. With the gap sealed, birds can no longer get underneath, so there is nowhere to shelter and nothing to come back to.

The mesh is held on with clips that attach to the panel frames, so there is no need to drill into the panels or the roof. That matters, because it avoids interfering with the panels themselves or creating new places for water to get in. Rain and air can still move through the mesh, and it sits low and neat at the edge of the array, so it is not very noticeable from the street.

Because every roof and array layout is different, the amount of mesh and the way it is fitted depends on the shape of the panels, the roof profile and how many edges are exposed. That is why bird proofing is best quoted after the roof has been seen, rather than guessed from a photo.

When is the best time to bird proof solar panels?

The ideal time is alongside a solar clean. Getting the droppings off the glass and fitting the barrier in the same period means your panels start fresh and stay that way, instead of being cleaned only for the birds to carry on as before. It is also easier to act early, before a pair has settled in and started raising young through the warmer months.

Timing also matters for the birds. If a nest is active, with eggs or chicks inside, sealing the gap could trap them, which is neither humane nor something any responsible operator should do. Native birds are protected in Australia, so if you think a native species rather than pigeons is nesting under your panels, it is important that it is handled responsibly and humanely. Mention what you have seen when you enquire, and the timing of any proofing can be planned around it.

If you can hear chicks or see birds carrying nesting material, do not try to block the gap or disturb the nest yourself, and do not go onto the roof. Simply note what you have noticed and pass it on.

How Daniel handles pigeons and solar panels in Melbourne

Daniel does every job himself, with no subcontractors and no call centre. For a solar clean he goes up on the roof with a harness and height-safety gear, then uses deionised pure water and soft brushes. There are no detergents and no pressure washing. Bird droppings are softened first and then lifted off the glass, rather than being scrubbed and smeared across the panel.

Every clean includes a free condition inspection, where Daniel checks for cracked glass, lifted seals, loose clamps and new shading, and flags anything he finds with photos. You also get before and after photos emailed the same day, so you can see the difference on a roof you cannot easily look at yourself.

If there are signs of birds using the gap under your array, Daniel will point them out and quote mesh bird proofing separately once he has seen the roof. He is fully insured with public liability cover, replies to enquiries the same day and can usually book in the same week. To get started, fill in the online quote form or call or text Daniel on 0400 725 887, and let him know roughly how many panels you have and where you have seen birds coming and going.

• $140 for up to 6 panels, inc GST
• $150 for 12 panels and $170 for 14 panels
• $5 for each extra panel after that
• Same price for single or double storey, with no call-out fee
• 10% off gutter vacuum cleaning when booked with a solar clean

Frequently asked questions