Which factor makes the Peregrine Falcon considered the most successful raptor?

The Peregrine Falcon's wide geographical distribution contributes significantly to its classification as the most successful raptor. This species is found on every continent except Antarctica, demonstrating remarkable adaptability to a variety of habitats, from urban environments to remote wilderness areas. Their prevalence in diverse ecosystems allows them to thrive in numerous conditions, ensuring a stable population.

While trainability and unique mating rituals are certainly noteworthy aspects of the Peregrine's behavior, they don't account for the overall success of the species in terms of survival and reproduction across its range. The focus on mammals as a primary hunting target also does not reflect the raptor's successful adaptation, as Peregrine Falcons primarily hunt birds, particularly during migration, which enables them to tap into a vast food source. Thus, their extensive geographical presence is a key factor in their success as a species.