A window that gives you a lovely view of the garden can present a very different picture to a flying bird. Reflected foliage may look like somewhere to land. A clear view through the house may look like somewhere to fly.

Making that barrier visible belongs in a wildlife-friendly garden plan. Start with the glass and what a bird can see around it, rather than waiting for another collision.

A reflection and a clear passage create different traps

RSPCA Australia explains that birds can mistake reflections for open space or fail to see transparent glass. A bird may also strike a window while escaping a predator near a feeding place.

Look for two arrangements: glass reflecting the garden, and aligned windows that show the outdoors on the far side of a room. With the second, closing an intervening door or blind can interrupt the apparent route. That does not necessarily remove a reflection on another pane.

Check from outside, more than once

Environment and Climate Change Canada’s collision guidance recommends looking from different angles and at different times of day because a window’s appearance changes. The same pane may show a room at one time and reflected vegetation at another.

Include transparent balcony barriers and other clear panels in your inspection. The Canadian guidance identifies these as hazards too; the relevant feature is the misleading surface, not whether the structure is called a window.

Write down the particular pane and view that need attention. If access is high or awkward, plan the work with the property manager or a suitable installer rather than leaning out to reach it.

Mark the whole surface, not one small corner

BirdLife Australia recommends high-contrast, repeated markings across the outside of the entire window, with gaps no greater than 5–10 cm. Tape, dots or a suitable painted pattern are examples. A few isolated stickers leave large areas unmarked.

The Canadian guidance uses the tighter rule of no gaps over 5 cm, horizontally or vertically, and markers at least 5 mm wide. This provides a specific layout to discuss with an installer. It is guidance, not an Australian legal requirement or a guarantee against every collision.

Do not rely on one hawk-shaped sticker. BirdLife stresses coverage and spacing rather than a predator silhouette. It also lists exterior flyscreens and other external screening among longer-term options. Choose a secure installation suited to the building; loose garden netting is not the approach described here.

Reduce misleading views around the glass

RSPCA recommends moving bird attractants away from problem windows and checking whether blinds or curtains actually reduce reflections. Indoor plants can contribute to an apparent destination beyond the pane.

Treat these as additional changes, not proof that the glass has become visible. Revisit the outside view after adjusting a blind or moving a plant. A useful question is whether you have interrupted the particular reflection or through-view you identified.

Repeated pecking may involve a perceived rival

Sydney Wildlife Rescue describes kookaburras and magpie-larks attacking their own reflections, usually as territorial behaviour, especially during breeding. This differs from a bird flying into an apparent passage.

Its advice centres on covering the outside reflection. Repeatedly scaring the bird away does not remove the perceived rival. Ask for wildlife advice if the behaviour continues or the bird appears injured.

After a collision, seek advice promptly

A bird that looks better after a strike may still have internal injuries, BirdLife warns. Contact a licensed wildlife rescue group or vet and describe the collision, location and visible condition.

Following WIRES’ emergency guidance, keep people and pets away and prioritise your own safety. Do not handle birds of prey. Contain another bird only if safe and a professional advises you; follow their transport instructions and give no food or water unless directed.

Use our injured-wildlife guide and rescue directory for help. Once the immediate situation is being managed, return to the affected pane and plan a lasting change.