Frankian, a professional falconer, reportedly opposed removing the nest as the first solution. Instead, protective nets and other equipment were installed to keep the birds away from workers until the chicks could fly.
The arrangement had to be adjusted continually as the falcons changed their behaviour. That made the work slower and more complicated, but it allowed the stadium transformation to continue without forcing the family from its temporary home.
David Bird, an emeritus wildlife biology professor, explained that peregrine falcons can remain protective even after their young leave the nest. The fledglings still depend on their parents for food while learning to fly and hunt, meaning the risk does not disappear the moment they take off.
The falcons’ choice of BMO Field is less surprising than it first appears. Peregrines favour high, secure nesting sites, and Toronto’s steel-and-glass structures can resemble the cliffs they traditionally use near water.
The busy urban setting may also provide food and discourage some predators. That adaptability has helped the species recover after historic population declines linked to DDT, with conservation groups continuing to monitor nesting sites across the city.
The four chicks have now reportedly left the nest successfully and are beginning to navigate Toronto. For BMO Field, the next test is straightforward: welcome the World Cup crowd while keeping the newly fledged visitors safe. The stadium’s most unusual pre-tournament fixture appears to have ended with a rare win for both football and wildlife.