Windows — Koala

Then came the twist. In 2018, a bushfire tore through the same forest. The main koala habitat was reduced to ash. But the Koala Windows—their polymer surfaces scorched but intact—stood. And weeks later, motion cameras showed surviving koalas using the windows not just to cross the tracks, but to reach a small unburned gully on the other side. The artificial trees had become a lifeline.

Reyes replied: "So we didn't build a crossing. We built a lesson." koala windows

The first "Koala Window" was not a window at all. It was a 6-meter-high panel of recycled polymer, molded to mimic ironbark bark, with hidden ledges and woven vines of durable coir fiber. It was attached to the side of an existing overpass. It cost $4,000 AUD—less than one rail signal post replacement. Then came the twist

Enter the engineers. Traditional wildlife crossings—overpasses planted with native shrubs—were too expensive for this narrow rail corridor. Tunnels failed because koalas rarely enter dark, enclosed spaces on the ground. But a chance conversation between Lin and a structural engineer, Tomás Reyes, led to a radical idea. Reyes was designing a noise barrier for a new housing estate. "What if," he asked, "we make the barrier rough, planted, and vertical? A fake tree that's actually a real habitat?" But the Koala Windows—their polymer surfaces scorched but

And that is the true meaning of Koala Windows. Not just a structure that saves lives, but one that teaches the next generation where to climb when the real trees are gone. A window is something you look through to see where you are going. But for a koala, it is also a reminder of where it belongs.

They installed five prototypes. Within a week, a female koala named "Bumpy" (for the scar on her nose) was photographed climbing one, pausing at a ledge, and using it to cross over the tracks without ever touching the ground. The panel had a small, circular opening near the top—a "window" through which a koala could observe the other side before committing. Reyes, an amateur photographer, captured Bumpy peering through that hole, her furry face framed like a portrait. The image went viral locally. "Koala Window" stuck.