HIGH-RISE NESTING
Usually, peregrine falcons make their nests in the soil or stones of a cliff ledge. This involves digging away at the loose gravel with their talons to make a safe hollow to lay eggs inside. In cities, however, there are sections of buildings already constructed by humans that produce a similar environment for these birds to nest in. At the top of skyscrapers, peregrine falcons have the height they seek from tall cliffs, as well as sheltered depressions in the form of gutters and walled rooftops. The falcons have taken on this habit in the skyscrapers of multiple cities, including New York, Sydney and Toronto. The birds prefer high structures to nest on as it gives them a vantage point for spotting their prey below. Cities also have a high population of smaller prey birds for the falcons to hunt. The urban dwelling has some surprising benefits, as scientists have found that these spots have higher breeding success.
Skyscrapers provide a warmer and more stable setting when compared to the falcon’s natural nests.