Pigeons and pest birds in Adelaide: solar arrays, eaves, and gutter damage

Four introduced bird species are responsible for nearly every Adelaide pest-bird complaint. Feral pigeons dominate the inner suburbs and CBD, roosting on commercial ledges, under bridges, and increasingly under suburban solar arrays. Common starlings nest in eaves, broken tile valleys, and roof voids across the metro. The common Indian myna has expanded rapidly across Adelaide in the last decade and displaces native species while creating its own roosting issues. House sparrows persist in older fibro and brick stock with accessible cavity nesting.

The headline issue in Adelaide right now is solar-array nesting by feral pigeons. Rooftop solar grew from a niche product to standard suburban infrastructure between 2010 and 2020, and pigeons identified the warm shaded under-panel space almost immediately. A typical infested solar array carries 5 to 15 birds, hundreds of kilograms of accumulated nesting material and droppings, and significant secondary costs (gutter blockages, sarking damage, mite infestations transferring into the roof void).

The inspection identifies the species first, because the legal pathway and the exclusion approach differ. Introduced species (pigeon, starling, myna, sparrow) have limited protection and can be excluded directly. Native species (galahs, cockatoos, magpies, kookaburras) are fully protected and require humane exclusion approaches that prevent access without harming the bird. Inspectors will not commission any exclusion work without correct species identification.

Feral pigeons: the modern Adelaide pigeon problem is mostly under rooftop solar arrays. The space between panel and roof tile is shaded, warm, weather-protected and predator-free. Inspectors also check ledges on commercial buildings, parapet walls, eaves on multi-storey residential, awnings over shopfronts, and the underside of carports and verandahs.

Common starlings: tile-roof valleys, ridge cappings, eaves with broken or oversized vents, behind fascia gaps, in roof voids accessed via fascia or ridge openings, and in any chimney or vent without a properly sealed cowl. They are cavity nesters and adapt quickly to gaps as small as 30 mm.

Common Indian mynas: aggressive cavity nesters that occupy similar spaces to starlings (eaves, tile valleys, vent openings) and displace them where they share territory. Inspectors increasingly find mynas in palm trees, dense hedges, and outbuilding eaves across the inner suburbs.

House sparrows: small cavities in older fibro, brick and timber stock. Air-brick openings, gaps in mortar, broken eave vents, and ageing weep holes are the standard sparrow harbourage. Less common than pigeons or starlings but persistent where they have established.

Native species (informational only): sulphur-crested cockatoos sometimes damage timber and TV antennas, galahs and corellas damage cedar weatherboards, and magpies use rooftop perches during swooping season. These are protected species and the inspection notes any damage but recommends humane exclusion through deterrents and physical barriers, not removal.

Visible roosting: birds repeatedly landing on the roof or under solar panels is the textbook first sign. Inspect within a week. Active nests become permanent residencies fast.

Solar panel installation or service: the installer often spots existing nests during work. Book a pest inspection before mesh exclusion is commissioned, to ensure damage is documented and exclusion priorities are correct.

Gutter cleaning anomalies: if a gutter cleaner reports unusual nest material, droppings concentrations, or damaged tiles, that is a flag to bring in a pest inspector to assess the broader picture.

Pre-purchase: bird damage is visible from the ground and is captured in pre-purchase inspections as standard. Use the documented damage as a negotiating point.

Spring (September to November): peak nesting season for most Adelaide pest birds. A proactive spring inspection catches new nests before chicks hatch and complicate exclusion.

Bird mite issues upstairs: sudden appearance of biting mites in upper-storey rooms after an abandoned nest is a classic Adelaide late-summer pattern. The inspection identifies and removes the root cause.