Where do Peregrines nest?
These raptors typically nest on high cliffs or nearly inaccessible ledges. These nesting sites, known as aeries, provide safety and vantage points from which Peregrines can survey their territory and hunt. Used for generations, aeries often have different annual inhabitants because several birds typically find and compete for the same suitable nest. Today, Peregrines in Wisconsin primarily are using tall buildings, power plant stacks, and bridges for nesting. But they also are beginning to recolonize historical sites on Mississippi River cliffs. Falcon mates often remain paired for life, and renew their bond with courtship in late winter or early spring.
