The adorable feathered squatters have been welcomed by staff who plan on installing a special nesting platform for them, as well as rigging up a camera to allow birdwatchers the chance to watch the noble birds. A specialist has also been recruited to ensure their wellbeing.

Curiously, this is not the first time that such falcons have found refuge in a KGHM facility. Peregrine falcons have also been living at another KGHM plant, in Głogów, since 2009.

“Apparently, the tall, monolithic nature of the buildings are a perfect place to raise chicks,” said Dariusz Matijczak, the chief forest management specialist at the Głogów facility. “The peace and quiet and food supply is ideal for them, and unlike classic skyscrapers, there aren’t any people in the windows or on the balconies.”

Regarded as one of Poland’s rarest birds, only around 100 peregrine falcons are believed to live in the country. However, thanks to their strict protection and the success of recent breeding programs, the existing population has steadily grown - according to the firm, 46 chicks have been raised in the H120 chimney of KGHM’s plant in Głogów, thereby significantly boosting Poland’s peregrine falcon numbers.

Not all birds, however, are expected to stay. Thanks to monitoring initiatives, it’s known that one of the Głogów birds, Giga, has since sought a new life in the capital and can be found nesting at the top of Warsaw’s Palace of Culture and Science.

This is not the first time that peregrine falcons have made the news in recent weeks. Last month, the mysterious death of a bird named Czart sparked a police murder hunt after he was reportedly poisoned in Lublin, eastern Poland, where he lived on a chimney of a thermal power plant.

In 2019, two other peregrine falcons died in similar circumstances in the city, and the online community has now clubbed together to offer a reward to find the perpetrator.