Which falcon is noted for being the largest over most of the continent?

The Peregrine Falcon is recognized as the largest falcon across much of the continent. This species is renowned for its size, powerful build, and impressive hunting abilities. Adult Peregrine Falcons typically have a wingspan ranging from about 3 to 4 feet, making them significantly larger than other falcon species like the American Kestrel or the Merlin, which are smaller and more agile.

Peregrine Falcons are also known for their exceptional speed and hunting prowess, often reaching speeds over 240 miles per hour when diving from great heights to catch prey. This combination of size and capability sets them apart from other species.

The other options represent smaller falcons or species that do not have the same size or widespread presence. The American Kestrel is the smallest and is often recognized for its vibrant color and smaller stature. The Merlin is also a smaller falcon, while the Gyrfalcon, although the largest falcon species overall, is less common throughout much of the continent compared to the Peregrine. Thus, in the context of the question, the Peregrine Falcon stands out as the largest widely distributed falcon across the continent.